Fraxinus1k Assembly Instructions (English, v. 0.9)

May 5, 2022 / Yohei Fukuma
Assembly Instructions
(English, v. 0.9)
Fraxinus1k is a 3D printer that has a print volume of
~170 mm³ with Core XY kinematics and a compact
size for home use and space-saving workshops.
Body Size：260x285x363mm
(without protruding parts)
Print Size：165x170x185mm
170mm四方の印刷サイズを持つ自宅利用や省スペース
工房で魅力的な第2世代のCoreXY構造の3Dプリンターです。

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June 12, 2022 / Yohei Fukuma
About Fraxinus
Fraxinus is an attractive 3D printer for home use and space-saving workshops.
Despite its compact size, it offers the high-speed operation of a CoreXY
motion system, and as of 2022.06, it is available in two print sizes: ~170
mm³ and ~220 mm³ .
The Fraxinus1k is conveniently upcycled from the Kingroon KP3S, utilizing the
original toolhead, rails, bed, electronics, and fasteners.
Similarly the Fraxinus3e is a larger model printer with CoreXY kinematics that
upcycles the Ender3 V2 and cheap equivalent i3 printers alike.
Note that the Fraxinus1k and Fraxinus3e lose about ~10 mm in each axes
respective to their original volume (180 mm³ KP3S and 235mm³ E3V2)
The cost of upcycling can be as low as 10,000 yen or $75 (provided you have
the original printers with additions such as Klipper & 3D touch installed). In
the process of building, you can learn various areas such as mechanics,
electricity, and software. We also have a public repository for usermods that
our community has developed for the Fraxinus printers.
Fraxinus 1 and 3e share many common design components that may be
interchangeable and updated. We expect to be possibly develop upgraded
models and mods in the future, such as enclosures, or aiming to achieve
higher speeds.
(Fraxinus is currently being developed and published by our Discord
community. If you are interested, we are looking forward to working with
you to develop the design, review, share know-how, and most importantly,
enjoy the company of like-minded people!
Invitation link: https://fraxinus.jp/discord)

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Fraxinus Assembly Instructions - Table of Contents
00 Introduction
01 Sourcing and printing parts
02 Machining of parts
03 Frame Assembly
04 Dismantling KP3S
05 Z-bed assembly
06 X-carriage assembly
07 Assembly of XY gantry
08 Belt and head assembly
09 Assembly of electrical components
Reference Materials / Appendix

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00 Introduction
In addition to conceptual notes and photographs of the first unit built in 2022, this
document also contains information, documents and manuals provided our Beta
Builders.
Please note that improvements have been made since then, and there may be
differences from the latest design.

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Fraxinus Introduction Updated: 2022.06.11
Summary
This data is part of the dataset for the release of the Fraxinus 3D printer.
Objective.
The purpose of distributing this data this time is to release it as open source to verify reproducibility, receive feedback from
other users on points that need to be corrected or improved, and consider improvements.
The former is reflected in the improvements, and the latter is verified in the form of UserMod and UserOption. At the same time,
we will collect materials to be considered for an open source license.
Rights (Licensing)
Basic Terms / Creative Commons / Proprietary License
Summary
This project is licensed under the terms of the Basic Terms, Creative Commons, and all terms of the Proprietary License.
Basic terms
Disclaimer
The use of the data published by this project is at the user's own risk, and neither the author nor the project operator will make
any warranty or assume any responsibility for any problems that may arise in the use of the data.

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Conclusion
By downloading the data, you agree to the license set forth in this project.
The user is deemed to be the one who agrees to the terms of the agreement.
About the modification
The content may be altered according to the author's wishes.
Creative Commons
Creative Commons license-based proprietary license (the "License").
The author is Yohei Fukuma.
The basic content is Creative Commons copyright notice, commercial use prohibited, and inheritance (CC BY-NC-SA).
Please refer to the reference URL at the end of this document for details.
○ Copyright Notice - You must give proper credit, provide a link to the license, and indicate any changes. You may do these in any
way that is reasonable, except in a manner that suggests that the licensor endorses you or your usage practices.
○No commercial use - You may not use this material for commercial purposes without permission. Please contact us if you wish to
do so.
○ Succession - If you remix, alter, or process this material, you
you must distribute your contributed portions under the same license as the original work.

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Proprietary Licenses
This proprietary license is an extension of the Creative Commons License. Therefore, the provisions of this license take precedence.
Please strictly adhere to the above information handling policy.
Photos and videos of the production process are welcome, and we'd be very happy to share them with you!
Requests to all assemblers
Please share photos, videos and work/process notes for improvement.
We welcome you to post your work on your SNS/YouTubes, etc., and we hope that you will enjoy sharing your hard work.
Of course, you are also welcome to share directly on Discord.
Please help us make it easier to cite your information.
We would also appreciate it if you could share information and suggestions on where to purchase individual parts and tool
selection to make the set even better.
We would be very happy to receive feedback on interesting points, your own findings, areas of difficulty, suggestions for
improvement, and requests for improvement.
(We are more than happy to be considerate, but please refrain from making unreasonable demands of the author.
Let's refrain from rushing or forcing improvements, and let's refrain from unfairly slandering each other's models.
We would be very happy if you could help us develop better data sharing methods and community development.
Thank you for this valuable opportunity and we look forward to developing
our relationship with you in the future. We would be very happy to have the
opportunity to work with you, and your help would be greatly appreciated.

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Reference URL
Commons Certificate: https://creativecommons.org/licenses/by-nc-sa/4.0/deed.ja
Legal code: https://creativecommons.org/licenses/by-nc-sa/4.0/legalcode.ja
What is a Creative Commons License: https://creativecommons.jp/licenses
URL to join Discord: https://fraxinus.jp/discord
Special Thanks / Acknowledgements
We would like to thank and congratulate VORON DESIGN for their excellent design and their willingness to share information and
promote the appeal of CoreXY to the world. https://vorondesign.com/
We would also like to thank Kingroon for designing, manufacturing, and marketing the KP3S, which combines excellent
performance with an affordable price and compact size for easy placement. https://kingroon.com/
Contributor : Klipper_jp group , Fraxinus group
fantaro, tiryoh, popatoh, caesar, Баклажаны, delicious fried rice, nezumin, yuma, Eitoku, nrtkbb, mazu-bunkai, kuki, proko, maru. ,
Miyata, pen-hori, psycho0h3ed, komei, tomorrow56, koma50, touken0515, f1zzy-boy, okuyasu, ochisamu, pirotsuku, and all
members who participates in the test build.
The past versions of the README can be downloaded from the following URL.
https://drive.google.com/drive/folders/1ADrxJAls39DFmlHT1zxADKN1pbPWs1ow

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Kingroon KP3S
$180-(25,000 yen)
180mm sq.
32-bit microcomputer
Color LCD
2021.07.16 / Yohei Fukuma| 9
About the Kingroon KP3S
This is a high-performance (if properly adjusted) FFF 3D printer that uses linear XY rails and costs only 25,000 yen.
Fraxinus1k upcycles this model to create a compact and fast CoreXY 3D printer.
Main features (compared to UP Plus 2, Adventure3 and Prusa MINI+)
Pros: Equivalent external shape but larger print size. (UP Plus 2 □140mm, Adventure3 □150mm)
Pros: Direct extruder standard. (Adventure3 and MINI+ are Borden standard)
Pros: Nozzle 265°C, bed 110°C compatible. (Adventure3, etc.: 240°C, Boden standard)
Pros: 360W power supply for small size and fast bed heating (UP Plus 2 180W, Adventure3 150W, MINI+ 160W)
Pros: 32bit microcomputer motor driver makes quiet driving sound (UP Plus 2 is 8bit-like).
Pros: Intuitive touch operation. (UP Plus 2 and MINI+ are switch-operated)
Cons: The standard bed is easily torn when exposed to high temperatures. (2 sheets were damaged in 4 ABS prints orz)
Cons: Glass beds have poor ABS compared to UP, and replacement is recommended.
Recommended URLs
Utilizing KINGROON KP3S - KINGROON KP3S Information
http://hitoriblog.com/kingroon_kp3s/docs/
Kingroon high precision FDM 3D Printer
https://www.kingroon.com/downloads/
Kingroon KP3S Review | 3D Print Beginner
https://3dprintbeginner.com/kingroon-kp3s-review/
...IdeaMaker profiles are also available.
IdeaMaker Review: Why It's My Favorite Slicer?
https://3dprintbeginner.com/ideamaker-review-why-its-my-favorite-slicer/
...Raise The famous IdeaMaker slicer for 3D is also available for other machines!
3D Printing Tips To Improve Print Quality | 3D Print Beginner
https://3dprintbeginner.com/3d-printing-tips-to-improve-print-quality/
...and many tips on how to improve print quality.

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We want to create a compact yet practical printer.
We referenced the VORON Zero and were inspired to create a design that is affordable using readily
available and cheap printers.
Use C-frame 2020 aluminum extrusions for our vertical frames.
I simply thought this would be a cool building material that would differentiate our printer design.
Reuse original KP3S materials as much as possible.
In particular, I wanted to reuse the two MGN12 linear rails, motor, bed, board, and harnesses.
Although this design merely repurposes a KP3S, I still want to make it attractive and visually appealing.
Reversible design
I wanted to consider the possibility that you may want to reverse or reconfigure your build back into a
KP3S. It would be kind of cool to be able to put it back together.
Fraxinus Design Goals/Priorities

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The 1515 aluminum frame seems to have no roll-in nuts.
Therefore, if a component is required to be fastened directly to the frame, it is imperative that you plan
beforehand and include the appropriate nuts prior to assembly. (We painstakingly had to disassemble our
original build 4 times and we advise you to work mindfully)
The fragility of cheap Chinese screws is extraordinary.
When reusing screws and fasteners from the KP3S/E3V2, please be careful not to over-tighten/torque
the screws and work slowly.
Fraxinus Assembly Notes/Warnings

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First, I strongly recommend that you have an operable KP3S with Klipper and a 3D
touch.
Although not required, previous experience with Klipper and more importantly the KP3S itself, will help
establish a baseline for your printer.
We recommend that you have an environment where you can print with ABS.
We recommend printing at home, at work, at school, or through acquaintances in order to have the parts ready
for printing. We also recommend printing most parts in ABS because of its heat resistance and durability; PLA
parts are said to melt when exposed to high temperatures, which can lead to fires, deformation, etc. We have
personally experienced that PLA parts deteriorate over time and crack, so we do not recommend this.
Please prepare tools as well.
Many tools such as soldering irons, electric drills and screwdrivers, wrenches, tweezers, pliers, and M3 and M4
taps are required for assembly. You can perhaps borrow these tools or use this opportunity to get them.
Fraxinus Pre-arrangement recommendations

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01 Sourcing and printing parts

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Fraxinus Sourcing Parts
We will source the necessary parts based on the Bill of Materials (BOM)
We recommend that you acquire/order the linear rails as soon as possible
When we sourced our linear rails: MGN7H-200mm x3pcs, the delivery time was 3-4 weeks, which took the longe
2022.06.11 / Yohei Fukuma |14
Latest data can be retrieved from Google Drive
(Currently open to beta users only for registrants)

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Fraxinus Printing Parts
Most if not all parts are to be printed in ABS.
For slicer settings, we recommend an extrusion width of at least 0.45 mm, a wall count of at least 3, and
an infill of at least 40%.
2022.11.7 / odaki, Yohei Fukuma |15
It is also recommended to adjust a slicer setting so that the gaps that will house nuts will have the correct size.
A good value to set to compensate for expansion of said gaps is 0.1 mm.
ideaMaker: "XY Size Compensation for Holes"
Cura: "Hole Horizontal Expansion"
Without proper adjustment/tuning, tolerances of the nut holes in the printed parts may become too small and the nuts may not fit.
Methods such as heat inserting or freezing the nut may be required if you encounter issues throughout the build.

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Fraxinus Printing Parts
The following printable parts are located in our repository with images of their best printing orientations below
2023.02.10 / tiryoh , Yohei Fukuma |16
A list with optional parts can be found on GitHub.
https://github.com/Fraxinus-3D/Fraxinus-Hardware/tree/main/Fraxinus1k/STLs

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Fraxinus Printing Parts – Drilling Jigs
We recommend printing the Jig with PLA. (Extrusion width 0.45 mm or more, wall count 3 or more)
2022.03.11 / nrtkbb , Yohei Fukuma |17
In Fraxinus 1k, the holes are in a different position.
This photo is purely demonstrative, and is of an old version.
The new jig (Jigu v2) must be used instead.

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Fraxinus Parts Printing - Accent Color Parts
The parts shown below (Feet, wheels, spacers, knobs, and X/Y brackets) are examples of parts you may wish to
color coordinate.
Please refer to pictures of assembled printers and 3D Model of the Fraxinus to get an idea where accenting
colors may be placed.

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2022.01.24 / Yohei Fukuma |19
Fraxinus Check for complete parts
Check if the parts are aligned.
Download the BOM Excel sheet for each person.
It is recommended to check the situation.
Latest BOM data can be retrieved from Google Drive
https://docs.google.com/spreadsheets/d/1K0-RqexZG5AE3L1nJuYZgFTMuxWp6OpQ/edit#gid=2125787441

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02 Machining of parts

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Fraxinus 02 Parts Machining (Frame Machining Overview)
1. 1515 frames
(1) Tap processing
M3 tapping on both sides. At least 11 mm deep. Tap on both sides as well as on the face required for assembly.
Needed to screw down the Jigu V2 for drilling.
The 1515 frame, which is the X-axis, does not require a tap, but it is not necessary to determine whether a tap is needed or not
It is also recommended that you tap into all 1515 frames, as this will allow you to sort out the ones with the best taps.
(2) Drilling
Drill the holes needed to pass a hexagonal wrench through (so-called wrench holes).
A total of 10 holes will be drilled for 6 of the total 12.
Note: Tapping must be completed first, as the Jigu V2 is screw-fastened to the side and used to guide the drilling.
The size accuracy of the holes is not critical, but their position is. If the holes are not positioned correctly, the wrench will not b
Conversely, if the size and position of the holes are accurate, assembly will be easier and more precise.
2. 2020C frame
(1) Tap processing
M4 tapping on both sides. At least 15 mm deep. Tap on both sides as well as on the face required for assembly.
It is needed to screw the Jigu V2 for drilling. If short screws are available, the depth can be made shallower.
(2) Drilling
Drill the holes needed to pass a hexagonal wrench through (so-called wrench holes).
Precautions are the same as for drilling 1515 frames.
3. 2040 frame
(1) Tap processing
Tap M4 on one side. Depth 9mm or more. only one side is sufficient as Jigu fixing is also not required.
(2) Drilling
Not required.
2022.11.07 / odaki |21

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2022.01.24 / Yohei Fukuma |22
Fraxinus 02 Machining of parts
M3 tap on both sides of the 1515 frame.
Note: To prevent biting, it is recommended to use a lubricant such as tapping
paste or other lubricant is recommended.
After a half turn, it is necessary to back off a quarter
turn to allow the facet to escape.

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Drill wrench holes in the required locations on the 1515 frame.
Note: Drill holes after confirming the necessary locations.
Note: Make sure the frame is firmly inserted all the way to the back of the jig before drilling.
Note: Make sure that the frame is firmly inserted into the jig before drilling.
2022.01.24 / Yohei Fukuma |23
Fraxinus1k uses Jigu v2 as a drilling.

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Drill wrench holes in the required locations on the 1515 frame.
2022.01.24 / Yohei Fukuma |24

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Drill wrench holes in the 1515 frame where needed.
2022.01.24 / Yohei Fukuma |25

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M4 tapping on two locations on one side of the 2040 frame.
Tap M4 on both sides of the 2020C frame and
Drill wrench holes where necessary.
2022.01.24 / Yohei Fukuma |26
Note: Two types of drilling jigs are used for symmetry.
Note: Drill holes after confirming the required locations.
A note on the part is also recommended to preven
Note: Make sure the frame is firmly inserted all the way to
Note: Make sure that the frame is firmly inserted in
1 x 2040 frame
2020C frame (short) x 2
2020C frame (long) x 2

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Tap M4 on both sides of the 2020C frame and
Drill wrench holes where necessary.
M4 tapping on two locations on one side of the 2040 frame.
Note: Two types of drilling jigs are used for symmetry.
Note: Drill holes after confirming the required locations.
A note on the part is also recommended to prevent misidentification.
2022.01.24 / Yohei Fukuma |27
The drilling position of the 2020C frame has been changed in Fraxinus1k.

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2022.03.22 / F1zzy-Boy , Yohei Fukuma |28
Aluminum frame processing instructions: AFSC-2-2020-4 xxx
Changes in Gen1st -> 1k are in red
345
(62.5)
(4.5)
345mm
Front – left
345mm
Front – right
Rear – left
Rear – right
(Mirror)
(Mirror)

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Aluminum Frame Processing Instructions: HFS3-1515-245
Side - upper
Side - middle
Side - Lower

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Aluminum frame processing instructions: HFS3-1515-225
Rear - side
Front –side / Rear - vertical
X carriage

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2022.03.16 / Mazu-bunkai , Yohei Fukuma |31

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Aluminum Frame Processing Instructions: AFS-2040-4-150

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Fraxinus bed frame processing
I modeled a jig for cutting plates.
Since I designed the jig to cut the entire jig, I assumed that I
would cut a little bit from both sides since it would be easy to
break the jig if I cut only one side at a time.
Table cut jig:.
https://drive.google.com/file/d/1IZTLueC4mPSf_9U0fA5dOjWzLf8velzl/view?usp=sharing
The zip archive contains stl and step.

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03 Frame
Assembly
2022.05.03 / tomorrow56 , Yohei Fukuma |35

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2022.01.25 / Yohei Fukuma |36
Fraxinus 03 frame assembly
The 1515 frame, which serves as the interior structure, is built first, and then joined to the C-frame, which se
It is recommended that the screws be assembled temporarily without tightening them completely at first, an
In addition, M3 nuts must be placed in the necessary locations when assembling the frame.
If the M3 nut is forgotten, disassembly/nut insertion/re-assembly is required.
CB3-12 screws are placed on the connection
side of the frame.
Tighten with an Allen wrench via through-
hole.

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upper side
M3 Type 1 (or 3) nuts, 2 pcs.
Put in the upper side of the aluminum
frame for fixing the bottom panel.
underside
Put in the underside of the aluminum frame
for fixing the board panel.
the front side
Put it in the front side of the aluminum
frame for fixing the front skirt on the front
side.
(9)
Fixed with
(1)CB3-12
(2) Insert the nut into the lower front
side (9).
(3)CB3-12
fixed at
(8)
(7)
Step 1: Fix the lower front side and lower rear side
to the lower left side of the side.
2023.01.31 /SummerOrange , nrtkbb , tomorrow56 , Yohei Fukuma |37

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upper side
One each on the outside of the linear guide
back side
Put in the back of the aluminum frame for
fixing the rear panel.
underside
Put in the underside of the aluminum frame
for fixing the Z-motor bracket.
(8)
(1) Insert 2 x CB3-12 into the top
surface of ⑧.
(2) Insert the nut into the lower
rear side (8).
(3) CB3-12 x 2 pcs.
Balanced and fixed
(7)
(9)
Step 2: Fix the lower right side of the side
to the lower front side and the lower rear side.

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outside
Put in the outside of the aluminum frame
for fixing side panels.
upper side
underside
M3 Type 1 (or 3) nuts, 4 right, 5 left
Put it in the underside of the aluminum
frame for fixing the skirt.
(7)
(7)
(1) Insert nuts into the left and right side lower
frames (7).
Step 3: Insert nuts in the lower left and right sides

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back side
Put in for rear panel fixation.
you
Put in the groove on the front side
toward you for fixing the linear rail.
(9) (9)
(1)Fix ⑨ with 2 x CB3-12
(2) Insert the nut into the rear
vertical (9).
Step 4: Fix the rear vertical to the lower rear horizontal

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surface
Put in the top of the aluminum frame for the
AB motor and Z holder.
back side
Put it in the other side (back side) facing you
for the rear panel.
(8)
(6)
(6)
Fixed with
(1)CB3-12
(2) Insert the nut into the upper rear side (8).
Fixed with
(4)CB3-12
(3)Insert 2 x CB3-12 into the
underside
Step 5: Fix side left middle and right middle on top of rear side

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M2 2 (or 3) nuts, 5 or 6 nuts, pre-installed
5 nuts if printed parts M2_Adapter_190
To set two M2_Adapter_85, insert six nuts.
Insert the nuts into the top surface of the frame.
(3)Installation of two linear rails to the side
M2x6 pan head screw 5 pcs. or 6 pcs.
Linear rail MGN7H-200MM is
C2020 on the front side and 17.9mm away from the rail.
(4) Insert the nut into the side (outside) of the middle left and
middle right (6) sides.
4 M3 Type 1 (or 3) nuts on the outside of the aluminum
frame
Put in for fixing side panels
(6)
(6)
(1) Insert the nut into the top surface of the side left-middle and rig
(2)Fix (8) with 2 x CB3-12
(8)
Step 6: Fix the rear horizontal top to the rear vertical

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Right side facing you
M3 square nut 2 pcs.
or M3 nuts + spacer 2020 M3 x 2 pairs
*Two linear rails vertically on the aluminum
frame.
Put it in the side where it is standing.
For fixing the AC inlet section
(3)
(1) Fix printed parts "foot-afsc" to each leg with CB4-16
(2) Fix each leg with "CB3-12 with M3x8x0.5 flat washers"
2 front side: 3 locations
2 rear side: 2 locations
(3) Insert the nut into (3).
(5) (5)
Step 7: Attach the four legs (C-frame AFSC-2020)
Washers are placed inside the slit.

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04 Dismantling KP3S

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Fraxinus KP3S disassembly (preliminary check of printed parts)
Before disassembling the KP3S, check the printed parts for excess or deficiency.
Check to see if it assembles without problems in combination with the frame and screws.
In particular, check in advance that Holder Idler R and Holder Idler L are output as designed.
It is recommended that Holder Idler be temporarily assembled with bearings, screws, washers, and nuts and
temporarily mounted on the frame.
If there are problems, reprint the KP3S before disassembling it.
Failure Cases and Remedies
The same data was needed to print multiple pieces, but only one piece was printed and parts were insufficient.
→ Print additional copies
I didn't realize there was an L and an R, and I printed multiple copies of one side.
→ Print the missing side additionally.
External size was not as intended and did not fit in the frame.
→ Tune the print settings so that the size after cooling is about ±0.1 mm from the design value, and reprint.
Or, modify the design data individually and adjust the parts to fit.
The hole size was not as intended and the nut did not fit.
→ Tune and reprint.
Or, heat the nut with a soldering iron and thermally insert it into the printed part
I screwed it down and the part cracked.
→ Check that the print direction is correct (recommended direction) and that the infill rate is sufficient (guideline is 40% or mor
Bearings and spacers did not fit in the space to be installed.
→ Check if the ceiling of the space is coming out as intended. If sagging, tune bridge and support settings.
If necessary, replace the washer with a thin washer. It is also effective to print washers with appropriate thickness with ABS an
2023.02.11 / SummerOrange, odaki |45
Holder Idler L
Holder Idler R

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2022.01.31 / Yohei Fukuma |46
Fraxinus KP3S Demolition
Remove the following parts from KP3S
It is roughly the entire electrical system + linear rail +
M3x6 screws.
Control board, LCD, printhead, 3 limit switches,
Motor x3, Linear rail x2, Lead screw,
Heating bed, various cables/harnesses, power supply,
Screws (mainly M2x6)

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Fraxinus KP3S Dismantling (Diversion Relation Diagram Part 1)
X motor → A motor
Y motor → B motor
Z Motor
E motor
Z linear rail (1)
Z linear rail (2)
Back of KP3S
KP3S front
2022.01.31 / Yohei Fukuma, kusa0 |47

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Back of KP3S
KP3S front
Printer head section
X limit switch
Y limit switch
heat bed
LCD
Power Box
Motherboard (MCU)
Z Nut
Fraxinus KP3S Dismantling (Diversion Relationship Diagram Part 2)
Flexible Coupler

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Fraxinus KP3S demolition #1
Remove three M3-3.83 hex truss screws and the outer shell of the
extruder
Remove the M2.5-19.76 hex truss screw and two M2.5 nylon nuts
and the extruder blower fan
Remove two M2.5-7.6 hex truss screws and fan shroud
Remove the black parts holding the cables to the extruder shell
while holding them with pliers, and disconnect the cables.
M3? 4 countersunk screws of 5.35 diameter and 15.825 length,
remove the heatsink fan
Remove two M2.5-7.5 hexagonal truss screws (upper right and
lower left), two m2.5-5.8 hexagonal truss screws (lower right and
upper left), and the extruder and linear rail fixings (while
supporting the hot end area as it will fall when the screws are
removed)
Remove the 525 mm belt on the X-axis
Secure the blocks of linear rail with something to prevent them
from coming off.
Two M2.5-31.58 hex truss screws (top left and bottom left) and two
M2.5-24.87 hex
One square truss screw (lower right), open extruder gear. M2.5 ba
Note that the ne-washer is in the upper left and lower left corner.

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Take a spring that pushes the filament against the extruder gear,
taking care that the extruder gear lid has a bearing with an outer
diameter of 10 and an inner diameter of 5.8.
Remove one M2.5-7.9 hexagonal truss screw, the spring that holds
the filament to the extruder gear, and the part that is sandwiched
between the gear.
Take the Extruder Gear
take the hot end
Take a bearing that's pressing on a filament with an OD 10 I.D. of 3.
Note that the part that was sandwiched between the spring and
the gear also has a bearing with an outer diameter of 9 and an
inner diameter of 4.93.
Note that where the extruder gear is removed, a bearing with an
O.D. of 10 and an I.D. of 5.79 is fitted.
Remove two M2.5-7.84 hexagonal truss screws (upper right and
lower right) and extruded motor

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Remove the three M4-29.87 hexagonal truss screws and the
intersection of the X and Z axes. (Where the eccentric nut is
attached, loosen only a little and support the motor and other
parts so that they do not fall off while turning the screws with
one hand.
Remove three M2.5-7.7 hexagonal truss screws and the X-axis
linear rail. note that there is an M2.5 spring washer attached.
Remove the four M2.5-9.76 hexagonal bolt cap screws and the
X-axis and Z-axis limit switches. Label the limit switches so that
it will be difficult to tell whether they are for the X-axis or Z-
axis.
Remove one M3-15.89 hex truss screw and the pulley at the end
of the X-axis? Note that there is an M3 spring washer attached.
Remove four M2.5-5.82 hexagonal truss screws and X-axis
motor
Remove four M2.5-9.88 hexagonal truss screws and the black
metal part that supported the X-axis on the Z-axis lead screw.
Note that M2.5 spring washers are attached to each.
Remove four dials for leveling and heat bed
Remove two M2.5-7.7 hexagonal truss screws, securing the Y-
axis and platform 2022.03.24 / nrtkbb , Yohei Fukuma |51

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Fraxinus KP3S
Demolition #3
Remove three M2.5-7.7 hexagonal truss screws
from the
Remove the Y-axis linear rail.
Note that M2.5 spring washers are attached.
Remove four M2.5-5.6 hexagonal truss screws
from the
Remove the Y-axis motor
Loosen the two M3-10 hex bolt caps and
Remove the Z-axis lead screw.
Loosen two M3-? Loosen the two hexagonal truss
screws of
Loosen the 2040 lateral support
Remove two M4-20 hex truss screws, 2040 from
the bottom; note the M4 spring washers attached.
Remove two M2.5-14 hex truss screws, two M2.5-
5.7 hex truss screws, and the Z-axis motor
Remove the flathead screw that serves as the zero 2022.03.29 / nrtkbb , Yohei Fukuma |52

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Fraxinus KP3S
Demolition #4
and the fan attached to the back side of the lid
on the bottom of the main unit.
Remove the four M2.5-5.9 hexagonal truss screws
and the bridge-like metal part lying on the
bottom of the unit.
Remove two M2.5-5.9 hexagonal truss screws and
the metal part to which the Y-axis motor was
fixed
Remove cable ties (or whatever they are called)
with nippers.
Remove the two M2.5-7.7 hexagonal truss screws
and the Y-axis limit switch. Label the Y-axis to
prevent confusion as to which axis it is.

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Fraxinus KP3S
Demolition #5
Disconnect all cables from the board.
Three M2.5-5.66 hexagonal truss screws, and
Remove the main board
from the
Remove the LCD board
Remove one M3-15.86 hex truss screw and one
M3-15.86 hex truss screw.
Remove the idler attached to the bottom of the
main unit.
Note that an M3 spring washer is attached
between the idler and the main unit.
M3 spring washer is attached between the idler
and the main body.
Demolition complete!

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Fraxinus KP3S Demolition

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05 Z bed
Assembly
2023.01.31 /SummerOrange , tomorrow56 , Yohei Fukuma | 56

View Slide

you
M3x6 cap bolt 5 pcs x 2
What you find when you disassemble KP3S?
Misumi CB3-6
Linear rail x 2
Fix the one taken from KP3S. Since the lower side
of the panel is in contact with the rear vertical
aluminum frame, the panel thickness of about 5
mm should be removed from the edge of the
aluminum frame.
nine nin
e
(2)Fix the linear rail to the rear vertical (9).
(1) Fix Panel_bottom to the frame with SUS-M3-10 x 12
Fraxinus 05 Z-bed assembly
Step 1: After installing the bottom panel, fix the linear rail to the rear vertical
2023.01.31 /SummerOrange , nrtkbb , tomorrow56 , Yohei Fukuma | 57

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(2)Installation of Holder Z nut
CB4-30 x 2
Fixing to M4 tap of AFS-2040
(1)Installation of Z-Nut
CB3-20 x 4
or CB3-30 (cut to 20mm) x 4
Holder Z nut
AFS-2040
Step 2: Installation of Holder Z nut
Mounting orientation note
Holder Z nut should have the rounded
indented space on the
The side with the round hollow space should
be on the bottom (motor side).

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Holder Z carriage
(3)Insert the Cap Z carriage.
(2) Pre-insert nuts for bed mounting
M3 square nuts × 4
or M3 nut + spacer 2020 M3 x 4
(1)Installation of Holder Z carriage (2
pieces on each side)
*Temporary fixation for later
adjustment.
M4 square nut x 3
or M4 nut + spacer 2020 M4 x3
CB4-16 x3
or CB4-30 (cut to 18mm) x3
Step 3: Installation of Holder Z carriage and preparation for bed installation
Holder Z carriage

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(1)Fix the Holder Z carriage to the
Fixed to linear rail
Outer 2 pcs: CB3-12 + M3 Washer
CB3-12 + M3 Washer
Two inside: 1.
CB3-12
Step 4: Attach the Holder Z carriage to the linear rail.
(1)Fix the Holder Z carriage to
the
Fixed to the linear rail
Outer 2 pcs: CB3-12 + M3
Washer
CB3-12 + M3 Washer
Two inside: 1.
CB3-12

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(1)Fix the Bed Frame with the pre-installed nuts.
Screws and washers for fixing are used from KP3S.
or SUS-M3-10 + M3 Washer x 4 sets
Fixing position of KP3S Bed Frame
Step 5: Install the Bed Frame
Interference caution:.
Bed Frame If not machined or if it is not machined properly, it will interfere with the Z
linear rail.

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Step 6: Installation of Heat Bed
(1) Attach the Heat Bed to the Bed
Frame
Before mounting the bed, thread the
springs through the four bolts on the
bottom side of the bed.
Thread the springs through the four
bolts on the bottom side of the bed before
mounting.
(2) Fix the Heat Bed with 4 adjusting nuts.
Variations of parts are available.
KP3S flow goods (yellow large-diameter
nut)
Large-diameter nut printed with insert
color
Tensioner Knob for A/B motors

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(1)Fix the Z motor to the Holder Z motor with CB3-12 x 4
Holder Z motor with CB3-12 x 4
Step 7: Installation of Z motor Part 1
2022.05.03 / tomorrow56 , Yohei Fukuma | 63
The screws that hold the motor in place are hidden in the frame.
First, fix the Z motor to the Holder Z motor.
The Holder Z motor is then temporarily fixed to the frame.
Holder Z motor
Since these two bottles are
hidden
After the frame is installed.
become unaccessible

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(1)Install Holder Z motor with CB3-12 x 2
(1)Attach the Holder Z motor to the bottom side of the
Step 8: Installation of Z motor Part 2
*Temporary fixation for later
adjustment.

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(2) Through the Z-rod
After positioning the Z motor and bed
Fix Holder Z Shaft 1k with CB3-12 x 2
(1) Insert bearing 688ZZ into Holder Z Shaft 1k
Z Rod
Step 9. installation of Holder Z Shaft 1k
(3) Pull out the Z rod and look through the Holder
Z Shaft 1k.
The Z nut is temporarily fixed to the Holder Z
carriage sothat the Z motor shaft is visible from
the center of the Z nut.
Fine-tune the position of the Holder Z carriage
and
Fine-adjust the position of the Holder Z
carriage and Holder Z motor so that the Z motor
shaft is visible from the center of the Z nut.
(4) Insert the Z-rod and connect it to the Z-motor with a
flexible coupler

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CB3-6 x 6 with Panel_rear
Fixed to frame
Heat Bed leads should be secured to the Bed F
Bed Frame before installing the rear panel.
Step 10. Rear panel installation
CB3-6 x 6 with Panel_rear
Fixed to frame

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06 X Carriage
assembly
2023.02.05 / SummerOrange , tomorrow56 , Yohei Fukuma | 67

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For further work
Loosen and remove the screws from the side h
Fraxinus 06 X carriage assembly
Advance Preparation

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HFS3-1515-225
(1)M2 Type 2 (or 3) nuts, 5 or 6 pcs. pre-
installed
5 nuts if printed parts M2_Adapter_190
To set two M2_Adapter_85, fit six nuts and
insert them into the top surface of the frame.
MGN7H-200MM
Step 1: Temporary fixing of linear rail to HFS3-1515-225
(2) Linear rail installation
Temporarily fix the linear rail (MGN7H-
200MM) in the middle of the frame with 5 or
6 M2x6 pan head screws.

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XY Bracket L1 XY Bracket R1
(2)Fixed with 4 x M2-6 pan head scre
(2)Fixed with 4 x M2-6 pan head screws
(1) M3 nut x 2 M4 nut x 2
M3 Nut
M4 Nut
M3 Nut
M4 Nut
(1) M3 nut x 2 M4 nut x 2
Step 2: Fix the left and right XY brackets (bottom) to the left and right linear rails by fitting nuts into the brackets

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M4 Washer
F694ZZ x 2
M4 Washer
Spacer 4.208
Spacer 4.2-8
M4 Washer
F694ZZ x 2
M4 Washer
(1) Follow the diagram below.
F694ZZ x 2 + Spacer 4.2-8 x 2 + M4 washer (4x7x0.5) x 2 ,
Prepare CB4-30 x 2, 3-30 x 2 through XY Bracket L2
CB3-30
CB4-30 CB4-30
The washers shown in gray can be omitted to match the actual product at the time of assembly.
Spacer 4.2-8
M4 Washer
F694ZZ x 2
M4 Washer
M4 Washer
F694ZZ x 2
M4 Washer
Spacer 4.208
Step 3: Install bearings, spacers, and bolts on the left and right XY brackets (top).
XY Bracket R2
XY Bracket L2
CB3-30
(1) Follow the diagram below.
F694ZZ x 2 + Spacer 4.2-8 x 2 + M4 washer (4x7x0.5) x 2 ,
Prepare 2 x CB4-30, 2 x CB3-30 through XY Bracket R2

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(2) Prepare for X Carriage fixation in the next process
M3 nut on top of frame
Put them in first (one on the left and one on the right)
Step 4. Fix HFS3-1515-225 to the left and right XY Bracket (bottom).
(1) Loosely install CB3-12 and M3 nut
Thread it through the slit on the underside of the frame.
Thread it through both left and right sides before securing.

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(1)Fix X Carriage with CB3-10
(1)Fix X Carriage with CB3-10
(2) Tighten the four bolts.
XY Bracket fixed top
and bottom
(2) Tighten the four bolts.
XY Bracket fixed top
and bottom
(3) Position the linear rail.
Tighten the bolt to secure.
Step 5: Place the left and right XY brackets (top) over the X Carriage and fasten them to the linear rail by tighteni

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07 XY Gantry
assembly

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Holder Idler L
Holder Idler R
CB4-30
(1) Fit M4 nut 2 from the bottom
(1) Fit M4 nut 2 from the bottom
M4 Washer
F694ZZ x 2
M4 Washer
Insert (2) F694ZZ x 2 , M4 washers (4x7x0.5) x 2
Fixed through CB4-30
CB4-30
(3)Insert the Holder Idler
L/R
Insert the Holder Idler L/R
into the frame from above
M4 Washer
F694ZZ x 2
M4 Washer
Fraxinus 07 XY gantry assembly
Step 1: Assemble the Holder Idler and mount it on the frame
Insert (2) F694ZZ x 2 , M4 washers (4x7x0.5) x 2
Fixed through CB4-30

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Frame Motor A1
Tensioner Motor
Fit M3-30 (all threads) + M3 washer
Embed the M3 nut.
tighten it all the way to the back here, but insert it into the underside of Frame Motor A1 and tighten it tightly.)
(1)Attach screws to Tensioner Motor (common to A/B) (2)Insert the Tensioner Motor into the underside of Frame Motor A1 and tighten M3-30.
Tighten M3-30.
Fit the M3 washer
Install Tensioner Knob
Step 2: Assemble A Drive (1)

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(1) Follow the illustration below and embed an M3/M4 nut on the bottom surface.
Prepare bearings, spacers and M4 washers (4x7x0.5).
(2)Fix Frame Moter A2 and Motor A with mounting screws.
Bracket Motor A
M3 nut x 2
M3 Nut
M4 Nut
M4 Washer
F694ZZ x 2
M4 Washer
M4 Washer
F694ZZ x 2
M4 Washer
Frame MotorA2
Motor A(X)
CB3-30 x 7
CB4-30 x 2
Washers listed in gray can be omitted during assembly to match the
actual product.
M4 Washer
F694ZZ x 2
M4 Washer
Spacer 4.2-8
Step 3: Assemble A Drive (2)
Note the direction and height
of the pulleys
A Drive aligns the pulley gear
with the upper bearing.
Align the pulley gears with the
upper bearing.

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Frame Motor B1
(2)Insert the Tensioner Motor into the underside of Frame Motor B1 and tighten
Tighten M3-30.
Fit the M3 washer
Install Tensioner Knob
Step 4.B Drive assembly (1)
Tensioner Motor
Fit M3-30 (all threads) + M3 washer
Embed the M3 nut.
hten it all the way to the back here, but insert it into the underside of Frame Motor B1 and tighten it tightly.)
(1)Attach screws to Tensioner Motor (common to A/B)

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(2)Fix Frame Moter B2 and Motor B with mounting screws.
Bracket Motor B
M3 nut x 2 M3 Nut
M4 Nut
Frame Motor B2
Motor B(Y)
CB3-30 x 7
CB4-30 x 2
M4 Washer
F694ZZ x 2
M4 Washer
M4 Washer
F694ZZ x 2
M4 Washer
Spacer 4.2-8
M4 Washer
F694ZZ x 2
M4 Washer
Step 5.B Drive assembly (2)
Note the direction and
height of the pulleys
B Drive aligns pulley gears
with lower bearing
Align the pulley gears with
the lower bearing.
(1) Follow the illustration below and embed an M3/M4 nut on the bottom surface.
Prepare bearings, spacers and M4 washers (4x7x0.5).
Washers listed in gray can be omitted during assembly to match the
actual product.

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A Drive B Drive
(2) Rear frame with CB3-12 x 2
Fixing to the upper side pre-
installation nut
(2)CB3-12 x 2 for rear frame
Fixed to the upper side first-in nut
(1)Fix CB4-30 to the M4
tap on the frame.
M4 tap on the frame
(1)Fix CB4-30 to the M4
tap on the frame.
M4 tap on the frame
Step 6: Attach the A/B Drive to the frame.
(3) Y limit switch
Put Holder_Y_Limit_Switch_1kc on and screw it in place.
Fix it to Holder Z shaft 1k and Bracket Motor B.
Y limit switch
CB3-12
Hexagon M3-6
CB3-12

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08 Belts and
head
assembly

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(1) Loosen the motor fixing screws x4 on the B drive and the
Loosen the tensioner knob.
Thread the belt on the lower side (B drive side).
(2) Loosen the motor fixing screws x4 on the A drive and the
tensioner knob on the A-drive, and loosen the
Thread the belt on the upper side (A drive side)
Fraxinus 08 belt and head assembly
Step 1: Thread the belt.
The motor tensioner can be loosened before applying the belt.
It is easier to adjust the tensioner later.
Motor.
Keep it close to the release
direction.
Motor.
Keep it close to the release
direction.

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Holder_Head-belt_r
(2) Place and pinch the belt
Long_Nut_25x7_r
(1)Embed M2 nut x 6 in
Long_Nut_25x7_r
M2 nut x 6 is embedded in
Long_Nut_25x7_r
(3) Tighten M2-8 x 3
Fasten one end of the belt.
(4) While pulling the belt
M2-8 x3 and secure the other side.
(5)M2-6 + M2 washer x 4 to
(5)Fix to the linear rail with M2-
6 + M2 washers x 4
Step 2: Pull the belt to secure it.
Space_E_Mounter_r
Holder_Motor_E_Mold_r

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Holder_X_limit_switch_KP3S_v2
(2) Hexagonal M3-6 x 2 with
X limit switch installed
(1) Remove two bolts from the motor and
replace them with
SBCB3-25 x 2 + M3 washer x 2
Install Holder_X_limit_switch_KP3S_v2
Step 3: Install the X limit switch on the Motor Extruder
X limit switch
Motor Extruder
(3) Insert the Motor Extruder into the
Holder_Motor_E_Mold_r.

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Step 4: Change the mounting direction of the heater and thermistor
2022.02.11 /SummerOrange , Yohei Fukuma | 85
(1) Loosen the imoval screw on the bottom of
the heat block and remove the
Remove the heater and thermistor inserted
from the right side of the heat block.
(2) Remove the heater and thermistor
inserted from the right side of the heat block.
(2) Insert the heater and thermistor from the left side of the heat
block and
Tighten the bottom immovable screw to secure the heater.
Imoval screw for fixing heater
heater
thermistor
Heat block front side
Heat block front side

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(1) M3 truss screw (for use with
KP3S) x 2
Fixed to Motor Extruder
(2) Titan Extruder parts and hot ends.
Insert them so that they overlap from
the back.
(3) Tighten the lid of the Titan Extruder.
Fix it with 3 x M3 truss screws (for use
with KP3S).
Step 5: Install the Titan Extruder on the Motor Extruder

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(2)Fit the Hotend Holder into the heat sink
Positional relationship between the Hotend Holder and the
positional relationship between the hotend holder and the
Step 6 Attach the fan and 3D Touch to the Hotend Holder and fit it into the Hotend heatsink.
(1) Screw the 3010 fan and 3D Touch into the
Hotend Holder as shown below.
3010 fan and 3D Touch are screwed into the
Hotend Holder according to the diagram below.
Fit the 5015 fan and fix it with tape.
M3-8 + M3 nut x 2 M3-12 x 4
3010 Fan
5015 Fan
3D Touch
Hotend Holder

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2022.02.11 / SummerOrange, Yohei Fukuma | 88
Step 7: Mounting the side upper frame
(1) CB3-12 + M3 washer
(2) Attach to C frame with
CB3-12 + M3 washers
(2) CB3-12 + M3 Washer
Install to Motor Block A/B with
CB3-12 + M3 washers.
(4) Cap_B_Idler_v4.
Attach to Drive A/B
(3) Cap_ASFC-2020_r to
Mounting on C-frame

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09 Around electrical equipment
assembly

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(1) Screw the main board to the Bracket PCB (2) Co-tighten Post PCB Main.
Fixed with M3-6 x 3 (used from KP3S)
We are co-tightening here.
I won't fix it now. Cutting the tap with M3 first makes it easier to work with.
Bracket_PCB KP3S Main board
Post PCB Main
Co-tightened with CB3-12
The post Cutting a Tap with M3 on PCB Main for Easy Work
Fraxinus 09 Assembly of electrical components
Step 1: Attach the bracket to the main board

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(1)Install Holder Fan on Post PCB Main (2)Install 5015 fan on Holder fan
It is easier to work if the fan fixing holes are tapped with M3 first
Holder Fan
KP3S Main board
Post PCB Main
Fixed at CB3-12
The post PCB Main with M3.
It is easy to work if you cut the tap with M3.
5015 Fan
Fixed with M3-20 x 2
Step 2: Install the fan

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(1)Fix LCD bracket to Raspberry Pi (2)Fix the LCD to the bracket
Fixed with M2.6-8 x 2
Or widen the mounting holes on the Raspai to M3 and secure with M3 screws.
Bracket_LCD_R
raspberry pie
LCD Panel
Cutting a tap with M3 on the Bracket_LCD makes it easier to work with.
Bracket_LCD_L
Bracket_LCD_R Bracket_LCD_L
Fixed with M3-6 x 4 (used from KP3S)
The LCD flexible cable is
be put out on this side.
Step 3: Attach the Raspberry Pi and LCD to the bracket

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Power supply unit attached to the bottom with double-sided tape
main board
Fixed with M3-6 x 3 (diverted from KP3S)
Step 4 Fix the mainboard to the frame (bottom side)

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Fixed with 2 x CB3-12
Step 5: Fasten the LCD and Raspberry Pi together with the skirt (front side)

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2022.01.27 / Yohei Fukuma | 95
Fraxinus.
XYZ motor and Z limit switch, and
Temporary placement of heated beds.
Extend the following harnesses.
Heated bed harness ... extended by approx.
10 cm
B(Y) motor, LimitSW harness ...extended
approx. 30 cm
It may vary depending on the lot of KP3S.
Refer to Appendix 1 Assembly Notes.

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Fraxinus.
Design, print and assemble slim print heads
For CoreXY, the rightward wiring will
interfere with the leftward wiring.
Therefore, take the wiring route to the left.
5015 FAN inserts and tapes the air outlet
2022.06.12 / tiryoh , Yohei Fukuma | 96

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2022.02.13 / Yohei Fukuma | 97
Fraxinus.
Rationalized harness routing for cooling
efficiency
In addition, the FAN for the board was changed
to a 5015 fan.
It was too noisy as it was, so a transformer
circuit was added.

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View Slide

Appendix 1
Assembly note
2022.02.19 / Yohei Fukuma

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Fraxinus Floor Panels
- Note that the floor panel is laser cut and soot from the cut will stain it.
Also, the mounting screw holes are not completely open, so they were drilled through with a 3mm drill.
- Installation of floor panel
- Remove the two vertical aluminum frames in the front.
- The linear rails are shifted up by the thickness of the panel because they interfere with the lower part of the two Z-axis linear
rails.
- Insertion of nut into frame
- Horizontal lower left frame: 4 pieces
- Horizontal lower right frame: 4 pieces
- Front lower frame: 2 pieces
- Bottom back frame: 2 pieces (this one is hard if you don't put it in beforehand)
- Insert floor panel and tighten M3x10mm screws (SUNCO CSPSL-SUS-M3-10 Slim head small screws with cross holes)
2022.03.14 / Eitoku , Yohei Fukuma |100

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Fraxinus power system relocation
- Unplug the power cable and start working.
- Disassembly of power supply unit
- Remove the two screws and remove the cover.
- Cut the cable ties attached to the DC cord.
- Unscrew the DC cord and pull it out from the cover.
- Screw the DC cord directly to the terminal.
(If necessary, improve by crimping U-shaped terminals, etc.)
- Pull the 100V side cable out of the power socket inlet module
- Yellow (Earth)
- red
- 2 black
- Remove the two screws on the power socket inlet module
and remove it from the cover
- Assembling the power supply unit
- Screw the removed power socket inlet module to the following parts
cab power switch.stl
- Connect the 100V side of the cable as before. Note that the cable length is just barely long enough to mount on the frame.
(If necessary, crimp the power cable module side with a U-shaped terminal or other means to improve the cable.)
- Power supply unit is attached to floorboard with double-sided tape
I used 3M's VHB tape, which I used for Voron0.
https://item.rakuten.co.jp/value-cr/451/
- To mount the switch module to the frame, remove the foot screws and insert two M3 nuts
- Mount power switch module with two M3x6 cap bolts (edited) 2022.03.14 / Eitoku , Yohei Fukuma |101

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Fraxinus Cable Extension
As for the cables, some of them will not be reachable due to the different structure from KP3S.
- There are three types of extension methods. Soldering, crimping of connectors, etc. are required.
Cut the existing cable in the middle and extend it by splicing.
2) Prepare and extend an extension cable with female and male connectors that match the connectors of the existing cable.
Replace with new cable
- Oyaide Electric's RSCB 0.2sq flexible silicone cord was used to extend motor and thermistor wiring
- Heat bed heater cables replaced with Oyaide Electric's RSCB 2.5sq flexible silicone cord
- The connector used was a compatible XH connector sold by Akizuki Denshi
- Engineer's PA-21 was used to crimp the contact pins
2022.07.04 / Eitoku , tiryoh , Yohei Fukuma |102
Create and extend extension
cables
Cut in the middle and splice
and extend.

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Fraxinus cable extension (Pattern A)
- The following four cables could not be reached in my environment.
1. X EndSwitch cable
I had the following male and female connectors with cables, which I combined and extended.
https://www.amazon.co.jp/dp/B088YKJ2MT
2. heat bed thermistor cable...extended in the same way as the EndSwitch cable.
3. heater cable of heat bed
It was just a thick cable without connectors, so we simply extended it by splicing cables.
Please be careful when selecting and connecting cables because of the large current flow here.
I used the following tools to handle the terminations.
https://www.amazon.co.jp/dp/B085GHC4NX
4.Y motor cable
I happened to have a longer equivalent cable, so I replaced it.
However, the pin assignments were different, so I had to replace some of the pins.
https://ja.aliexpress.com/item/1000006970455.html

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Fraxinus cable extension (pattern B)
- The following five cables could not be reached in my environment.
1. Heater cables for heat beds
Replaced with Oyaide Electric's RSCB 2.5sq flexible silicone cord
*Since a large current flows here, be careful in selecting and connecting cables.
Terminations were treated with the following ferrule terminals + tooling.
https://www.amazon.co.jp/dp/B085GHC4NX
2. heat bed thermistor cable
Oyaide Electric's RSCB 0.2sq flexible silicone cord + XH connector compatible product was used to make an extension cable.
3.Y motor cable
Oyaide Electric's RSCB 0.2sq flexible silicone cord + XH connector compatible product was used to make an extension cable.
X EndSwitch cable
I cut it in the middle and extended it by splicing.
For the cable extension, I used Oyaide Electric's RSCB 0.2sq flexible silicone cord.
Extruder motor cable
The X motor cable was the longest, so it was replaced.
2022.07.04 / tiryoh , Yohei Fukuma |104

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Power supply and cooling fan for Fraxinus RaspberryPi
- The power supply for the RaspberryPi was supplied by a step-down voltage from a pair of vacant 24V terminals on the power
supply unit.
- For the step-down, there is a cheap step-down module on Amazon, so I adjusted the output to 5.2V output with this
module and built it in.
(5.2V is used because the RaspberryPi3B+ is prone to voltage drop alarms, so it is set a little higher.)
https://www.amazon.co.jp/dp/B010RYGGJC
- The power connection to the RaspberryPi was made directly to pins 4 (+5V) and 6 (GND) of the pin header.
https://shop.lgs.jp/post-519/
- For connectors, we used Dupont connectors that we had on hand.
https://www.amazon.co.jp/dp/B07DF9BJKH
- Note that the screw holes on the RaspberryPi board are 2.6mm, so be careful which screws you use when mounting.
- The cooling fan was supplied by a 24V fan that was left over, so it was supplied by a pair of 24V terminals on the power
supply unit, which were vacant.
This fan is a little noisy and vibrates a bit, perhaps due to individual differences. If you know of a better one, please let us
know.
https://www.amazon.co.jp/dp/B07DB7DLMM

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Fraxinus back panel
- The back panel is an acrylic panel? and very nicely processed.
Remove the protective paper from both sides of the surface.
- Installation of back panel
- Insert nuts into the frame (it's hard if you don't put them in
beforehand)
- Two nuts on each of the two back vertical frames
- 4 each above and below the back horizontal frame
- Horizontal lower left frame: 4 pieces
- The AB motor and the power switch module must be removed.
- I used M3x6 cap bolts for the screws. However, in my environment, a
total of three screws under the AB motor and under the power switch
module had to be low head type screws or they interfered with each
other. (I used the ones I had on hand.)

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Fraxinus Bed Related
- Cutting the bed
- The protruding part for fixing cables on the bed needs to be cut as it
interferes.
- It might be easier to use a metal saw to cut it horizontally in a
straight line. I cut it in an L-shape so that I could restore it, but it was
quite troublesome. (I think it would be easier to use a metal saw if the
bed can be firmly fixed.
- Fixing of lead screw
The lead screw itself was tapped with an M3 tap, so although
different from CAD, we fixed it with a handheld M3x25mm screw from
below instead of screw-tightening from above.
- Hot bed cable route
Since the cable is connected under the hotbed, it must be secured as
immobile as possible or risk disconnection, so we created a simple fixing
part and secured it with spacer 2020 M3.stl + M3 nuts + M3x6mm screws
+ ties.
I used this gold saw.
https://www.amazon.co.jp/dp/B0002YVI7S
However, the blade is replaced by this one with a 32-mountain blade.
https://www.amazon.co.jp/dp/B0026FBG14
It's pretty tough, so please hang in there! 2022.03.14 / Eitoku , Yohei Fukuma |107

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Fraxinus Orange Pi Zero 2 use
I think proko already did this, but I was able to get Klipper &
Mainsail working on the Orange Pi Zero 2 without any problems.
It took me a little while because I'm not familiar with Linux.
Now I can return the RaspberryPi3B+ to the original Ender SW
^^^'
Still, it is a good choice if the price is around ¥3,000 and it is so
useful.
I wrote a note on the installation of Mainsail Klipper on
OrangePiZero2.
Please let me know if there is anything wrong. We would like to
correct it.
Installation of Mainsail and Klipper on Orange Pi Zero2
|Eitoku @hd1103 #note
https://note.com/eitoku_note/n/n8a7f2118493e

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Fraxinus Printhead Lightweight
I reduced the weight by integrating the L-shaped metal parts Y Moter holder and holder head-belt.stl. 40g -> 11g.

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Fraxinus Printhead Lightweight
As a result of the weight reduction, the ADXL345 measurements have improved considerably, and even with an acceleration of
about 10000 mm/s2 , it seems to be OK. â
I am not sure myself how to see the details, but the key point is the description of Recommended shaper written in the upper
right box. If you look at the line of this value, you can see the approximate ACCEL (maximum acceleration) and SM
(max_smoothing). Furthermore, if you set [input_shaper] in printer.cfg based on the value shown here, the ghost-like waves
caused by resonance will be greatly reduced.
https://www.klipper3d.org/Measuring_Resonances.html
Source : https://t.co/PUBNMqKkMz

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Appendix 2
Remodelled Parts

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Fraxinus Small diameter plastic washers
We produced a small-diameter resin washer to improve the contact
between the bearing and the washer. If friction loss can be reduced,
speed and print quality can be improved.

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Fraxinus 5015FAN fixing parts
We are designing a fixing plate for the 5015 fan. In order to make it as
lightweight as possible, the 5015 fan is fixed in place by fitting into the
protrusions, eliminating the need for screws. The anti-drop ring is also
designed for ease of maintenance. 😄😄😄😄

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Fraxinus Printhead Cooling
Improvement
Two-way cooling
Flow path division
Exit Extension
I remixed it for the purpose of
First of all, we tried to carry on the design.
2022.04.15 / Maru. , Yohei Fukuma |114

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Fraxinus Printhead Mounting
Simplification
I made this mounter inspired by Eitoku's design to improve belt tension
adjustment. I tried to compensate for the lack of rigidity inherent in resin
by using a thicker bottom surface, a bathtub structure, and integrating it
with the stepping motor.
The resin nut holder is slightly bent, but this does not seem to be a
problem in terms of fixing. The belt tension could be easily adjusted and
fixed from the front by tightening about 2 screws on the resin nut holder
after the belt is threaded.

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Fraxinus Large Diameter
120FAN Cooling
Assuming a single 120 fan can cover the power
supply, board, and raspi (not loaded yet). The main
unit is now almost silent 🤗🤗.
2022.04.23 / Pen-hori , Yohei Fukuma |116

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Fraxinus Underfloor
Maintenance Made Easy
I wanted to open up the floorboards to do maintenance
and tinker with the boards, so I changed the design to
install the boards in the opposite direction from the
original design.
Since removing the entire subfloor would be
troublesome due to the many screws, and since we were
told that the floorboards also served as frame
reinforcement, we decided to open only the board
section.
2022.06.01 / Proko , Yohei Fukuma |117

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Fraxinus New Printhead
My KP3S is 1.0, so the Fraxinus print head cannot be
used as is, so I had to design an original one. The
extruder has already been changed to Orbiter
Extruder V1.5, so I will use V6 for the hot end, 5015
blower fan for filament cooling, and 4010 fan for heat
sink cooling.
2022.06.05 / Proko , Yohei Fukuma |118

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June 7, 2022 / Yohei Fukuma
Fraxinus 1kc
I am pleased to report that I
have attached a c2 enclosure to
Fraxinus (first generation). It
seems to cover mainly large
acrylic cost about 2500 yen
without any problem. 30min
printing seems to go to less than
50 degrees inside the chamber
temperature. It seemed to be
fine without any cover on the
back corner.

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Fraxinus1kc is full cover 3D printer that has a print size of
170 mm square with Core XY structure and attractive
(without protruding part)
170mm四方の印刷サイズを持つ自宅利用や省スペース工房で魅力的な
第2世代のCoreXY構造3Dプリンターの印刷/材料エリアフルカバー版です。
c

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Fraxinus1kc2 is full cover 3D printer that has a print size of
170 mm square with Core XY structure and attractive
170mm四方の印刷サイズを持つ自宅利用や省スペース工房で魅力的な
第2世代のCoreXY構造3Dプリンターの印刷/材料エリアフルカバー版です。
c2

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Appendix 3
Other

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Fraxinus Frame Dimensions
In this case, we used NIC's 2020C surface frame, 2040 frame, and MISUMI 1515 frame. The dimensions of these frames are different from those
of V-Slot frames and MISUMI 2020 frames used in general 3D printers, so those who wish to use other frames will need to calibrate them
according to their cross-sectional shapes.
Aluminum Frame for Fraxinus Slot thin NIC 2020 frame connected to MISUMI 1515 frame.
Cf. MISUMI 2020 Frame
Slots and holes
Different sizes
Cf. V-Slot frame
Slots and holes
Different sizes
2022.03.01 / Yohei Fukuma |123

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Fraxinus KP3S main control chip and Klipper availability
Kingroon's official procedure for installing Klipper is that STM32F103 or GD32F303 can be installed, but not STM32F407.
The STM32F407 itself is an MCU supported by Klipper, so there must be some way to run Klipper.
STM32F103VET6 GD32F303VET6 STM32F303VET6 STM32F407VET6
Photo (No results with KP3S board)
(No record of use on KP3S
board)
package LQFP100 LQFP100 LQFP100 LQFP100
CPU ARM Cortex-M3 ARM Cortex-M4 ARM Cortex-M4 ARM Cortex-M4
frequency (esp. of
waveforms)
72 MHz 120MHz 72 MHz 168MHz
SRAM Size 64KB 64KB 80KB 192KB
Flash ROM 512KB 512KB 512KB 512KB
Boot Loader Offset
(Kingroon KP3S)
28KB 28KB? - 32KB?
(MKS Robin Nano V1.3 and
Assuming same and loader
offset)
Klipper operation in KP3S Confirmed.
(Kingroon info)
⇦ unconfirmed unconfirmed
Klipper-compatible MCU
(with or without MCU-
specific code)
Fat. ○ (upward compatible with
STM32F103?)
○ (upward compatible with
STM32F103?)
Fat.
Remarks & klipper firmware
Compilation notes, etc.
As per the official tutorial.
No problem
MCU is configured with
STM32F103, and additional
*Reference: Copy source of
GD32F303VET6
Freeze information on TFT
Update when bootloader offset is
2022.03.01 / Баклажаны🍆🍆🍆🍆 , Yohei Fukuma |124

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Due to the characteristics of the KP3S substrate, even 3D touches that can be used with other 3D printers may not work, and I will list the
results of my trial last summer. From right to left: Aibecy, Iycorish, Deanyoyo, F Fityle, SM SunniMix, and the roughly transparent cavity
one did not work KP3S. Also, these 3D Touch are not said to be of good quality and TriangleLab and the original ones are better.
Reference URL: Automatic Bed Leveling with 3D Touch - KINGROON KP3S Information (hitoriblog.com)
Aibecy Automatic Bed Leveling Sensor ¥2,687 https://www.amazon.co.jp/dp/B08JZ8Y7F4 KP3S OK, Aquila OK
Iycorish Automatic Bed Leveling Sensor 1,331 https://www.amazon.co.jp/dp/B07ZXGW2G8 KP3S OK, Aquila OK
Deanyoyo Auto-leveling Sensor ¥1,320 https://www.amazon.co.jp/dp/B08XLZ3S9R KP3S OK, Aquila OK
F Fityle Auto-leveling sensor ¥1,280 https://www.amazon.co.jp/dp/B07MM32DXN KP3S NG, Aquila OK
SM SunniMix auto-leveling sensor ¥1,320 https://www.amazon.co.jp/dp/B07ML3WXX6 KP3S NG, Aquila OK
Use of 3D Touch on Fraxinus KP3S boards
2022.03.01 / Yohei Fukuma |125

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X Motor Y Motor Z Motor E Motor
CPU Fan
Heat Sink Fan
Parts Cooling Fan
Heatbed Heater
Hotend Heater
X Limit Switch
Y Limit Switch
Z Limit Switch
3DTouch
Heatbed
Thermistor
Hotend
Thermistor 2022.04.03 / nrtkbb, tiryoh, Yohei Fukuma |126
Fraxinus KP3S circuit connection
BLTouch GND 5V Signal
KINGROON
genuine
green red yellow
External
products
Trianglelab,
etc.
tea red
bitter
orange
(Citrus
aurantium
)
Z+ Limit SW Signal GND 5V
KINGROON
genuine
white black NC
External
products
Trianglelab,
etc.
white black NC
External Trianglelab,
etc.

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outside
Put in the outside of the
aluminum frame for fixing the
side panels.
upper side
Put in the upper side of the
aluminum frame for fixing the
bottom panel.
underside
M3 Type 1 (or 3) nuts, 4 right, 5
left
On the underside of the
aluminum frame
Put it in for fixing the skirt.
Fraxinus Nut Placement Summary
Side Side Side Bottom HFS3-1515-245

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upper side
aluminum frame for fixing
the bottom panel.
underside
Put in the underside of the
the board panel.
the front side
Put it in the front side of the
the front skirt on the front
side.
Front side HFS3-1515-225

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upper side
the bottom panel.
One each on the outside of
the linear guide
back side
Put in the back of the
the rear panel.
underside
Put in the underside of the
the Z-motor bracket.
Rear side lower HFS3-1515-225

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back side
Put in for rear panel fixation.
you
Put in the groove on the
front side toward you for
fixing the linear rail.
M3x6 cap bolt 5 pcs.
What you find when you
disassemble KP3S or Misumi
CB3-6
linear rail
Fix the one taken from KP3S.
Since the lower side of the
panel is in contact with the
rear vertical aluminum frame,
the panel thickness of about
5 mm should be removed
from the edge of the
aluminum frame.
Rear Vertical HFS3-1515-225

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surface
M2 2 (or 3) nuts, 5 or 6 pcs.
5 nuts if you want to set in
the M2_Adapter_190 of the
printed parts and put it in
the groove on the top
surface toward the aluminum
frame, or 6 nuts if you want
to set 2 M2_Adapter_85.
M2x6 pan head screw 5 pcs. or 6
pcs.
linear rail
Fix MGN7H-200MM 17.9mm
away from C2020 on the
front side
Side (outside)
Put in the outside of the
the side panels.
Fraxinus Nut placement summary
Side Horizontal Middle HFS3-1515-245

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surface
Put in the top of the
aluminum frame for the AB
motor and Z holder.
back side
Put it in the other side (back
side) facing you for the rear
panel.
Rear side up HFS3-1515-225

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Right side facing you
M3 Type 1 (or 3) nuts and
spacer 2020 M3.stl.
Combined 2 pieces
Put in the side of the
aluminum frame with two
linear rails standing vertically.
For fixing the power supply.
Rear left AFSC-2020-4-300

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Fraxinus KP3S dismantled (diagram
of diverted relationship)
Motherboard (pcb)
LCD
A Motor
B motor
Z Motor
extruder
E motor
Z Linear Rail
Z Linear Rail
Power Box
KP3S front
Back of KP3S

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CAD and modeling applications available for free for personal use
There are several promising modeling software, with Fusion 360 at the top of the list, which we will share with yo
Fusion360: https://www.autodesk.co.jp/products/fusion-360
...The leading CAD system available to individuals free of charge. Versatile and easy to use.
FreeCAD: https://www.freecadweb.org/?lang=ja
...The leading open source and freely available CAD system.
DesignSpark Mechanical: https://www.rs-online.com/designspark/mechanical-software-jp
...free & commercially available CAD that can be used in combination with electrical CAD.
OnShape: https://www.onshape.com/ja , https://www.onshape.com/en/products/free
...CAD, a well-known complete cloud application.
ThinkerCAD: https://www.tinkercad.com
...CAD, also developed by Autodesk for learning, is easier to use.
Blender: https://blender.jp
...probably the world's most famous open source & freeware 3D CG animation development environment. Modeling is also availabl
Houdini: https://www.sidefx.com/ja/products/houdini
...3D CG animation development environment with strong node-based physics rendering. Modeling is also possible.
Unity: https://unity.com/ja
...probably the most famous real-time 3D development environment in the world.
2021.05.26 / Yohei Fukuma |135
Source: https://cad-kenkyujo.com/2020/02/18/free-cad/, etc.

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Data sharing site suitable for personal use and public access
If you have a 3D shape or object you would like to create, it is useful to search for it first. Other sites that
share 3D data include MyMiniFactory and SchechFab, as well as the Smithsonian Institution, the
Geospatial Information Authority, and NASA. If you have any other recommendations, we would be very
happy to hear them.
Thingiverse: https://www.thingiverse.com
...Probably the most famous site where data for 3D printing is shared, mostly STL.
Grab CAD: https://grabcad.com
...Probably the most famous site with 3D CAD data for design, mostly OBJ, STP.
Yeggi: https://www.yeggi.com
...A site where you can cross-search 3D printing data from many sites, including the above two sites.
Cgtrader: https://www.cgtrader.com/ja/free-3d-models
...3D CG data sharing/selling site. Free & STL data are also available.
Autodesk Online Gallery: https://gallery.autodesk.com
...A site with many Autodesk CAD data such as Fusion360 as it is.
Instructables: https://www.instructables.com
...The site includes a variety of production processes, including 3D modeling.
2021.05.26 / Yohei Fukuma |137

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Recommended articles Personal 3D modeling/3D printing
With the recent maturation of personal 3D printers, a number of people have started 3D modeling and printing
in the past few years alone, and there are a few that are inspiring to read and share.
If you have any other recommendations, I would be very happy to hear them.
(Almost in Japanese)
How to start a 3D printer life for beginners｜Keiji Matsumoto@geografica developer｜note
https://note.com/keizi666/n/ne6f2dfec6c2d
...software developers to explain the usefulness of 3D modeling/3D printing as a hobby.
Why did I get so addicted to the 3D printer swamp that I couldn't get out of it?
https://takulog.info/addicted-to-3dprinter
...A look back article for those who started 3D printers in 2020.
All 68 specific uses for what I made in a year after buying an inexpensive 3D printer.
http://hitoriblog.com/?p=59325
...The examples are specific and easy to understand.
In-house Makerspace Transcends Internal and External Boundaries and Creates Connections | fabcross
https://fabcross.jp/topics/tks/20190709_ic_makerspaces.html
...This article shows why Microsoft and Google are placing and utilizing makerspaces in numerous locations within their
companies.
2021.05.26 / Yohei Fukuma |138

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Fraxinus is a 3D printer that has a print size of 170 mm
square with Core XY structure and attractive size
for home use and space-saving workshops.
170mm四方の印刷サイズを持つ
自宅利用や省スペース工房で魅力的な
CoreXY構造の3Dプリンターです。

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Fraxinus1k Assembly Instructions (English, v. 0.9)

Fraxinus1k Assembly Instructions (English, v. 0.9)

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