Guitar tuner. How to make perpendicular gear tooth?

How do I recreate the perpendicular thread seen in this guitar tuner in Shapr3D? Alternatively, I want to learn more about threads/ gear in general (this one is perpendicular, can I do something else?). Resources recommendations would be nice.
Thanks all

Context, I want to recreate the tuner since I am trying to build a guitar a headless guitar. No clue how to recreate those headless guitar tuner


alternatively, how do I recreate something like these

Have you tried McMaster-Carr? They sell gears and have STEP files for them that you can import into Shapr.

1 Like
1 Like

Hi,

NCAD videos are a great source of ideas.

For your specific need, you must use a worm gear, because it is the only gear that is not reversible: it means that you can rotate the yellow worm and the blue gear will rotate also, but what ever the torque the guitar’s string will apply to the blue gear, it will never rotate by it’s own.
(This is due to the friction coefficient’s angle being higher than the helix’s angle).

Worm gear also provide large reduction ratio in a compact design, because for each turn of the worm, the gear will rotate by just one tooth, which is require for precise tuning of the string.

1 Like

I see. Very good explanation. I was hoping to reduce the size of the tuner. This video is very useful, and this is the right idea I believe. Thanks

@TheBum @Oregonerd thanks for your reply. PEC’s video is the solution I was looking for

1 Like