I modifies the attached file in SU 2017. It looks fine to me. When I import it into my printer software and preview it before I send it to my printer, it looks like it has added a cover on top of the piece as well as other junk within the drawing. None of this shows on the Sketchup drawing. I don’t know what to do to clear this up. Can you help me please. If you can fix it, great but please let me know what you did so I can learn form it.