Heavy-Duty Spool Holder Compatible with 3kg Spools (for Prusa MK4)

I had the opportunity to use a 3kg spool from Polymaker, so I needed a compatible spool holder. This model has been reinforced to support heavy spools and is designed to allow for smooth rotation.

The diameter of the sleeve shaft is compatible with 1kg spools from Polymaker, eSUN, Overture, and Tinmory.

The main shaft has threaded ends, so to avoid interfering with the threads, I have designed it as a two-part assembly.

※Please glue the three parts: main_shaft.stl, main_shaft_02.stl, and shaft_core.stl.