I found a nice VW key chain online. the author did share the source but made it in a program I don’t have so all I had to work with was the stl file….
I printed it without any issue but wanted to make a few changes. using the import function in SCAD I was able to add and subtract from the object easily.
Just a couple of lines to remove the background disk from the key chain…
just as easy to add a post to a file to make it a tie tack………
or turn it 2D for the vinyl cutter