I got bored during quarantine so I looked for random blueprint on google and started doing them in FreeCAD, then exported them to Blender (Blender on the right) : r/FreeCAD
Freecad to Blender best practices? — OSArch Community
FLOSS workflow with Regard3D+Blender+FreeCAD — OSArch Community
Export freecad to blender 3d - YouTube
Freecad to Blender best practices? — OSArch Community
Freecad to Blender best practices? — OSArch Community