He used FreeCAD?? That is the most amazing and shocking part of this for me. Every time I have ever tried to use that software something goes wrong only for hours later to find a forum post that Oh that doesn't work in FreeCAD currently.

Maybe I just have had a few bad experiences and I'm by no means a CAD expert, but that one is close to the top of my list and I have used 5/6 CAD programs over the last 15 years.