We had a broken and hard to find ALLMAX shower rail bracket/guide that seemed a perfect job for our Ender 3, Sketchup Online, and spool of clear PETG.

Using a set of inexpensive digital calipers made this short and easy work in Sketchup Online.

There was no noticeable contraction in the print after it cooled and it came off the glass bed without issue once everything cooled down.

I hope this helps someone!