I made a 3D printed Cotton Pad and Swab holder for a friend.
It was a pretty long print, and I had a failed start on the lid. I used extra glue stick to get better adhesion. I noticed that it left a check of plastic missing from the lid. I tried sanding, but it was too deep. (bottom left)
So rather than wasting 5 hours and more filament. I fixed it with the glowforge in minutes, with some veneer.
But how did I get a perfect shape to cut it out? No tracing required. I imported the stl file for the lid into tinkercad.
Just export the file as a SVG.
I just opened the SVG into illustrator and deleted the inner wall and smoothed the path a bit.