My self designed spool holder works just perfect! Very smooth rolling.
All you need to buy is 2 PCs. of roller bearings 6203-2Z (outer diameter 40 mm, inner diameter 17 mm, width 12 mm, 2 metals closing discs, grease filled) - I bought them for about $5,00.
I just finished making the designs for Version 1.0:
- perfect smooth unrolling of the filament helps to get better results on the print because the feed motor doesn’t need to pull this hard
- for spools with an inner diameter of about 53 mm
- now with screw-nut to hold down the spool onto the hub
- spool width 50-55 mm (smaller spools will need a simple spacer ring) - but usage without nut also possible
- mounting without tools on the metal rod on the snapmaker (without the plastic sleeve)
- for changing filament you only have to unscrew the M48x2 nut
I didn’t have tested this upgrade yet if it does work with the originally provided filament spools in width but the inner diameter is the same so it should work just fine.
STL-files for this mod (I suggest printing it with layer height 0,15mm):
Hub: Hub.stl (1.1 MB)
Axle: Axle.stl (250.5 KB)
Sleeve: Sleeve.stl (108.5 KB)
Screw-nut: Screw-nut.stl (305.6 KB)
Shim: Shim.stl (31.3 KB)