Prusa i3 MK2S Filament Bearing Adapters
thingiverse
I didn't like how the filament glided on the spool holder on my i3 so I decided to take matters into my own hands. We have this machine at work that devours certain components but always leaves ball bearings intact, and new parts come with bearings so I have a stash of brand-new 6005 ball bearings laying around. These are adapters designed to mount the filament spool on said bearings. The original parts were made for 1kg Prusa PLA which has a 50.35mm internal diameter on the spool, I'll add to this post as I buy more filament with different spool sizes in the future. This of course requires you to provide your own ball bearing, any size 6005 will do. UPDATE 2/5/18: Added an outer shell for Hatchbox 1kg spools that's perfect for holding them securely in place.
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