It would be useful to have an “empty spool database” where people post a photo+weight of their empty spool, plus some fancy way to search by image.

Edit: https://github.com/jtrmal/spoolz looks like a partial solution.

Mediocre video. I sat through all the crude humor and still don’t know how the roller mechanism works.

Interesting, Cura does successfully avoid running into the part by default:

If I disable “Avoid Printed Parts When Traveling”, the result looks similar to PrusaSlicer.