It rotates smoothly to allow filament going into the bowden extruder. Fully compatible with all kind of spools just changing the printed cylinder or even not using it.
- printed platform part (of course)
- 1 x 10cm M8 threaded rod
- 1 x 608ZZ bearing
- 2 x M8 bolts (1 inside RIchRap 3DR top boss)
- 4 x M8 washers (optionaly you can use the printed one)
Follow the pictures in order to assemble it