I have made a small corner with M8 threads in it.
When I export it as STL and upload it to shapeways, I can’t get the holes to be visible. Where the holes is the preview only shows solid surface. But when I upload without threads it shows as it should. Now I can’t figure out what I’m doing wrong and I would be very glad if someone could help me. I have also verified it in Meshlab that it opens and looks ok. But I’m not really familiar with Meshlab yet so… I have run Cleanup on it before export to STL but it’s the same issue.
Attaching both STL and SKP. Btw, when modelling I scaled up first 10x and scaled down.
CornerM8.skp (777.8 KB) CornerM8.stl (2.7 MB)