If you followed those instructions, the object remained a mesh of triangles
over the whole operation. But that's OK as the article was explaining STL
file mesh repair. The repair method is reasonable, they have you import
the STL, make a tiny change then re-export the part as STL and have faith
I had some time on my hands
I decided to see if Freecad would import an stl. I followed the instructions
here:
https://all3dp.com/1/7-free-stl-editors-edit-repair-stl-files/
and used an XYZ calibration cube stl which came from here:
https://www.thingiverse.com/thing:1278865/files
The
