Design a shaft with a gear on one side and a collar that will mesh a 13 mm ID bearing and opposing thread to accept a locknut with a collar on the other side of the bearing. All of the modeling is complete except when I attempt to subtract the thread from the shaft - it either fails as an improper cut (hint?) or the resulting solid is not what I would have expected… I have tried several approaches including manual boolean operations instead of part WB cut and the dependency graph appears normal so I must be missing something fundamental… I have attached the model that is in the "ready to cut" state and would appreciate any hints or tips that will unblock me. Also, given that I am new to FreeCAD, if there is a better way to accomplish my end goal or you see problems with the modeling approach, then by all means let me know.
On another note, why does the element ordering in the combo view change if you "undo" an operation? The dependency graph shows the underlying dependencies haven't actually changed but the combo view suggests that they have because they are re-ordered… Is this a visual cue that I need to understand or a UI feature?
Feel free to point me to good documentation/materials on the FreeCAD conceptual model so I can build my understanding of how best to model in FreeCAD so something like this is less of a mystery.
Thanks in advance,
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OS: Mac OS X Word size of OS: 64-bit Word size of FreeCAD: 64-bit Version: 0.16.4945 (Git) Build type: Release Branch: master Hash: 6cd9220079a1efb1a2f33842fa614521a31bf0d5 Python version: 2.7.9 Qt version: 4.8.6 Coin version: 4.0.0a OCC version: 6.8.0.oce-0.17
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OS: Ubuntu 14.04.3 LTS Word size of OS: 32-bit Word size of FreeCAD: 32-bit Version: 0.16.6037 (Git) Build type: None Branch: master Hash: be9920a132b57fbcf049d6a53d17cc34df1cbe30 Python version: 2.7.6 Qt version: 4.8.6 Coin version: 4.0.0a OCC version: 6.8.0.oce-0.17