So I'm visiting /3/ from time to time and look for autocad/pro engineer threads but haven't found any yet.
Anyone using these programs? Seems like just blender and co. is a thing
CAD belongs here, but you'll find a lot more on /diy/.
But you won't find a whole lot of it here because this board is focused on the art aspect of 3D.
At best you'll see some guys doing archviz.