There are constraint based CAD addons for blender, and the black art of Geometry node rendering pipelines to auto-generate objects/features. There is also the

There are constraint based CAD addons for blender, and the black art of Geometry node rendering pipelines to auto-generate objects/features. There is also the fact most of the system is open Python API based, and thus everything can be generated from code. However, Blender was not meant to be a constraint based CAD/CAM package. Solidworks still seems like the leader in offline mode, but parametric-everything FreeCad is evolving at an astonishing rate. For critical professional work, gambling on opensource is still inappropriate most of the time. =3