An STL is just a mesh, a collection of joined up points. It's like exporting a JPEG of a word document, you can print it but editing is a huge pain. For insta

An STL is just a mesh, a collection of joined up points. It's like exporting a JPEG of a word document, you can print it but editing is a huge pain. For instance STLs don't support curves, so they're approximated with lots of short lines. Usually CAD interchange is either in STEP or the program's proprietary format.