I’m fairly new to SketchUp, and learned/used the web version today to create this 2 piece part. I wanted to convert the STL to a STP file for machining and am using FreeCAD 0.18. When I go to analyze the mesh, the only option that prompts repair is for self-intersections (repairing this caused the mesh to be unusable). Not really sure where I went wrong in SketchUp to cause this, but if anyone could take a look and get back to me that would be great, thanks.
Panel Comb.stl (115.4 KB)