Auto-Rewind spool holder - for Prusa mk3
prusaprinters
1kg spool version needs cylinder/roller, inner coils and rods from original model.2,5kg spool model need only inner coils from original model(print additional two per cylinder/roller).Connecting spool holder to the spacer is done by M3x14 and M3 nut (I used Nyloc nut, but should be fine with normal one).Spool holder have integrated filament storage hole to keep it safe when not in use (I would still recommend lifting the spool to release rewinder tension just in case).
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