FreeCAD is a parametric 3D modeler. Parametric modeling allows you to...
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FreeCAD is a parametric 3D modeler.
Parametric modeling

allows you to easily modify your design by going back into

your model history and changing its parameters.
FreeCAD is

open source (LGPL license) and completely modular, allowing

for very advanced extension and customization.
FreeCAD is multiplatfom, and reads and writes many open

file formats such as STEP, IGES, STL and others.

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AppImages: FreeCAD2 [Прочие]