Impervious Globoid Tuning Peg

Long ago I wanted to make a dulcimer. Oh boy where did we end up.

Why?

I needed a lot of tuning pegs but commercial ones were too expensive.

So I made my own, in a previous post. They worked, but they weren't up to my standards. I later improved on my design and made them quite capable (not published, very recent), but they still were bulky and a little hard to manufacture since they needed a sort-of-precise metal part.

Then I remembered a design by noamtsvi that was very similar to a commercial one and it did work to an extent but then the thread of the worm sheared (maybe I should have used a stronger material, but I want to use pla if possible) and I thought I wanted to make my own. While I don't consider this a remix, I did take a few design decisions from his design that he surely found through a bunch of work. Link to his design.

Globoid gears

Globoid gears are a type of worm gear that envelops the wheel. This ensures good teeth contact and strength. It is a more robust geo