Spool roller holder for large hole SunLu spools

thingiverse

I recently started using some Sunlu filament and the hole is 75mm, requiring me to create a holder that fits this size as well as smaller sizes. I designed a bracket using the usual 7 x 22 ball bearings and an 8 mm threaded shaft, which I attached to my existing holder bracket. The picture shows my custom-made bracket for my Ender 5, but you can easily bolt the roller on to any suitable bracket. Later in the day, I uploaded a revised version with a small piece of material removed from the top of the shaft thread - simply cut it away with a knife if needed. To address concerns about bearing tightness, I re-uploaded one with a slightly tighter upper bearing holder on 12/2/2019.