Prusa Mk4(S)|(Mk3x) Spool Roller/Holder
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My overly designed spool roller/holder as a replacement for the original Prusa spool holder - fits all spools.
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Updated at source:
Model information
- Source
- Printables
- Category
- Prusa Parts & Upgrades
- License
- Creative Commons — Attribution — Share Alike
Update 16.04.2024:
- Added a wide roller and support for a single spool with a maximum width of 128mm.
Original version:
My version of the filament spool roller for my Prusa Mk4(S). After a few changes, tweaks, and repairs, I think it's ready for publication… so here it is:
All parts are designed with 'correct' tolerances (at least on my Prusa Mk4(S)). You will need a few 'extra hardware pieces' for assembly – and maybe some glue if you really want.
Single 'separate' roller:
- 4x 608 bearings
- 4x washers (for bearings)
- 4x M3x10mm (or x15mm) screws for 608 bearings
- 4x M3x15mm (or 20mm) screws for assembling two supports with side covers.
The single roller should easily hold any spools up to around 83mm.
Two rollers screwed together:
- 8x 608 bearings
- 8x washers (for bearings)
- 8x M3x10mm (or x15mm) screws for 608 bearings
- 6x M3x15mm (or 20mm) screws for assembling '4x support with 4x side covers' plus ‘2x side covers with 2x coupling nuts.’
Two rollers can hold anything from the smallest spools up to 205mm wide spools, which is definitely more than some 5kg spools on the market.
My idea was to use two 1kg spools all the time, plus I wanted a holder that could also fit 2kg Prusa spools. Just position any bigger spool in the center and you're all set!
Bearing mount:
Two rollers screwed together:
Mounting advice:
If you are mounting two rollers together, first gently tighten all coupling nuts—tighten them firmly once you have them mounted on your printer. This should eliminate any height differences between the two rollers.
I also really like the idea of a "filament resting spot"... so I included that here as well.
And yeah… feel free to use any other hole :)
Single Wide version up to around 128mm
