Summary

I got a used printer that was missing one of the spool holders. Rather than spend $20 on one from another country I decided to print one.

I was having trouble with the nut, so I added one at 101% and one at 102% diameter.

Additionally I provided 2 other lengths (90mm, 60mm and original 80mm from stop to middle)

Printed at 0.3mm course resolution because who cares, it's in back. Decided to use 4 shells with 10% infill.

The other thing I did was import the stl's to sketchup and fix the mesh problems that sketchup has problems with. My reason was to be able to make it shorter and longer, however after I printed the first one I decided it didn't really matter.

It worked, but my dog managed to eat it when I removed it (she eats ABS for whatever reason). And now I've donated the printer to a school, so I don't have photos of the actual printed part! Sorry.