Singer Sewing Machine Fashion Cams (With ring gear stl)

These are currently UNTESTED clones of vintage singer fashion cams.
UPDATE: CAMS 31 AND 37 ARE NEEDLE-BREAKERS - ONLY USE AT 50% WIDTH!

Being unable to find these anywhere - and Chinese clones going for between $10 and $20 EACH! - motivation was high to create some open source jobs.

I'd love if you guys/Gals can test these and let me know which ones need work.
I have plans to make a few custom ones of my own too.

See the video for details on the initial design and testing process.