this post was submitted on 25 Jul 2024
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FreeCAD
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Your own 3D parametric modeler.
FreeCAD is an open-source parametric 3D modeler made primarily to design real-life objects of any size. Parametric modeling allows you to easily modify your design by going back into your model history and changing its parameters.
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With a complex assembly with 20 fillets it can take a half hour to reassign them all. There is no alternative or workaround and you need fillets for structural integrity in many cases.
It is definitely a big deal. For bigger designs you simply can't wait until the design is fully, 100% tuned and done at the very end to add fillets and chams which is the general "suggested workaround."
I made a complete flight stick in freecad. It was really hell having to rebuild every cham and fillet the model 4-5 times after a small change needed from printing the prototype that changed 1 edge and freecad now decided that a good replacement for the edge 200 chamfer is edge 13 on the other side of the model.