Spool Hub

grabcad

I manufactured and printed two hubs for my printer using PLA at a .15mm layer height. These hubs are press-fitted onto a 0.375-inch drill rod, ensuring proper alignment of the filament spool. The center hole ID is also 0.375 inches; however, the printed ID was slightly smaller, so I smoothed them out with a 0.375-inch drill. These hubs are compatible with the PRUSA i3 MK2 spool arms provided with the printer, resulting in smooth filament feeding without the previous hopping motion.