AND HAVE NO “PARTS” UNDER .5MM/.03” THICK 1. A Closed model is one that has no bare, un-joined edges 2. A Solid model has no coincident or intersecting geometry 3. A Watertight model is one that, if the INSIDES of the walls were filled with water, it would not leak. 1. Printing order is determined by queue and is on a first-com, first printed basis 2. Print jobs are limited to 10 hours per job, and 10 hours per student per week during “crunch time” 3. A Watertight model is one that, if the INSIDES of the walls were filled with water, it would not leak. 3DPRINTING PROCES