outdated design, check out the new one:
https://www.thingiverse.com/thing:2345219
My Christmas present for you.
You need:
4 bearings 628ZZ
4 screw M5 x 25
4 nut M5
and the printed parts
P3steel_style_spool_roller_frame.stl | 82.7KB | |
P3steel_style_spool_roller_washer.stl | 33.5KB |