I have a really odd problem that I can't figure out.
I have designed a simple box for a project I'm working on that includes a lip so that I can attach a lid. I can import the shape into S3D and it shows correctly in the main window:
However, when I click the 'Prepare to print' button, the print preview excludes the lip and the resultant print matches the print preview:
I can only assume there is something wrong with my print settings but I am not sure where to look for it. I've tried changing the top solid layers and the perimeter shells without success.
Can anyone suggest where I'm going wrong?