Prusa MK3S Spool Holder Mod

thingiverse

I found that some filament spools, particularly ones without a raised inner lip, would catch on the standard T-shaped Prusa MK3S spool holder. This was a 2 hour project to quickly improve the situation. #Goals * Reduce friction in the system * Use the existing base (cut down on waste) * Keep one arm unmodded (works fine for most of the filament I use) * Use hardware I happened to have on hand #Required Hardware * 2 x 4mm x 86mm (length) smooth rod * 4 x 3mm nut * 4 x 3mm x 14mm (length) bolt * 2 x 4mm (hole) x 8mm (outer diameter) bearing #Misc A few things that can easily be improved: * Trim down the rod to the exact length needed (I left it at 100mm) * Experiment with using only a single smooth rod or 3 smooth rods * I decided to glue the spacers onto the rod to prevent any horizontal movement. Alternatively, the spacers could be resized to cover the full length of the rod.