Washer for Yamaha Guitar Tuner Mechanism

My Yamaha guitar (an F370 Dreadnought) has small plastic washers between the tuning knobs and the worm gear shafts. Some broke - so the knobs started rattling around.

I created this very simple OpenSCAD model to print some new washers - the dimensions of the provided STL are 4,2 mm inner diameter, 6,6 mm outer diameter and 1,0 mmm thickness, which perfectly fit my guitar. If you need other dimensions - just enter them in the OpenSCAD file.

I printed them from white PLA - so far, they're holding up perfectly … if they should ever break, well … :D