A replacement for the spool holder in the Mizar Pro 3d printer. The thread it's 30 mm diameter, so basically usable where it fits, not in particular for the mizar pro.

I printed it as test at 0.3 layer, 2 walls with a really bad PLA and it just works. So basically you can print it as you please with any filament. To make the nut screw easier, I sanded a little bit the thread and applied a little bit of PTFE grease.