Fitschenringe
thingiverse
Finger Rings. Everyone knows it: The door creaks open with a squeak on the floor. Just print out the rings and insert them between the hinge pin and the frame. I have 0.5 mm, 1 mm, 1.5 mm, and 2 mm thick rings with a 10mm hole and an outer diameter of 15mm. How long they last depends on the material, of course. I'm testing it out first with PLA.
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