Customizable 3D Tolerance Test

cults3d

NOTE TO SIMPLIFY 3D USERS: Several users have reported issues with S3D slicing models, and I was able to replicate the problem, where the 0.2 part is fused at about Z=10mm. A screenshot of the issue can be seen here http://i.imgur.com/99Qa9SV.png. If you encounter this problem, try rotating the part on the Z axis by 90 degrees or clicking Mesh | Separate Connected Surfaces before slicing. This test model allows users to verify the accuracy of their printing process and determine the optimal clearance between moving parts, such as hinges. It was inspired by a Maker's Muse video https://youtu.be/TYuLVN3YHw8 and designed using OpenScad (the source file is included). The test enables users to evaluate up to 7 different clearances of their choice. Each clearance is tested with a cylinder and a rod that have the specified clearance between them. After printing, examine which clearances resulted in free-moving parts, which can be freed by breaking them using the screwdriver slot at the bottom, and which are stuck. Notes: * The model does not test tolerance of first-layer adhesion, as it is typically more problematic due to squashing against the bed and always has ample clearance on the first layer. * Each cylinder has an overhang of 45% inside. This is used to keep rotating centers from falling out. * Clearances are measured horizontally, on the x,y plane, parallel to printed layers. As a result, actual clearance at overhang sections is lower, but horizontal clearance of each layer is what matters. * With my 3D printing process (FFCP, PLA, S3D), I can achieve 0.2mm clearance but not 0.15mm clearance. To customize this test, click on the Customizer button and change model parameters.