Coupler Wing Nutter

thingiverse

Coupler Wing Nut Credit goes to pbbft from thingiverse.com and reddit for coming up with the idea. This handy tool lets you loosen or tighten the coupler at your extruder without needing a wrench, perfect for when your filament is being stubborn and refuses to budge no matter how hard you try to persuade it. Due to differences in printers, you might need to scale this design slightly. The fit should be snug but not too tight. One side of the hex slot has been flared to make installation easier - simply install it from the threaded end. To get it onto the coupler, use a screwdriver or any other tool that fits into the side slot to pry it open just enough. Find more information and download this design on GitHub.