FreeCAD is a customizable, open-source paramentic 3D CAD and BIM software with FEM support, built on the Opencascade geometric kernel. It was created primarily for product design and mechanical engineering, but it can be used in a wide range of industries, such as electrical engineering, or architecture. Features to take in mind are multiple bodies, sketch and body mapping, revolve, circular patterns (array) and body appearances. This video was recorded in the stable release of FreeCAD 0.17 (2018-05-08). https://www.freecadweb.org FreeCAD tutorial freecad wheel spokewheel A2plus in FreeCAD
In FreeCAD the Sketcher provides parametric or “constraint-based” 2D drawing that can be used as the basis for extrusion, as an alternative to using a normal 2D shape. (Indeed, the documentation suggests the Sketcher was only intended to be used for this purpose.) Extruding a 2D face in FreeCAD makes a single solid of uniform thickness. The multi bodies files are directly managed by FreeCAD. For files repetition (various copies of a same model), the most suited solution is to use the online Sculpteo tool for series production (up to 20 pieces). It permits optimization of the files disposal. Thus it impacts the production cost.
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