This is a hugely serious problem for the program. So much better to have the necessary file conversions built in. Should have been some sort of open format. We waste a huge amount of time learning a new program and then creating a drawing no one can use. I'd be happy with a simple 2D file export in a usable format.

These appear to be the ones that Autocad can handle: https://knowledge.autodesk.com/support/ ... mport.html

I'm going to try to print to PDF and see if that works.

(Of course, a person who is conversant in Autocad will not want to install SH3D.)