Universal Spool Rewinder and Drybox

Irritated by the stock MMU buffer? Don't want to spend the requisite time, filament and space to print the existing filament rewinders, or have unusually shaped spools? Would you like fast, easy loading and unloading of your filaments, and for them to be kept dry while you're using them? Look no further! Here, I present an almost* totally universal spool rewinder that has very few moving parts and can easily be incorporated into a drybox to keep your filaments both nicely wound and dry!


\* I've tested this rewinder on a variety of shaped/weighted spools and have only had issues with a 3kg one I've got. Inner hole diameter is unimportant for this rewinder!

# How it works

This rewinder uses friction to wind the rewinder drum while the spool is in use. Once the rewinder is maximally wound, the spool slips against the drum and the rewinder is held in this maximally wound state until unloading begins. As the filament unloads, the rewinder unwinds and coils the spool up. Simples!