Prusa i3 MK3S Spool Holder

thingiverse

I built an improved spool holder for my Prusa i3 MK3S that incorporates bearings and load cells to boost performance and provide precise information about how much filament is remaining. A custom scale display was created to get the values onto a small screen: https://github.com/raveious/filament-scale. The HX711 board fits perfectly into the back PCB slot, while the 3cm x 7cm protoboard I used fits snugly into the front PCB slot. Future plans include making an octoprint friendly version of the spool arm, so multiple versions were created to make that easier.