Spring rotation bias and cross-axis coupling

[BimmyBot]

disclaimer: I am new to 3d mice (borrowed an official one once before,) and this issue is likely due to my lack of practice...

That said, the spring has an inherent handedness, different tension/return strength depending on which way you twist it. Also all other moves make it twist a little, since any stretching of any or all of the 3 springs causes a twist as well, (especially vertical push/pull). The main thing for me is how different twisting left vs right feels.

I tried just printing 2 springs at half thickness and mirroring them, which felt a little better for 2 seconds before the thin springs got mangled. I'm willing to try to design a new symmetrical spring, but wanted to know if anyone else has come up with a solution, before I go down that rabbit hole.

We have some vertical space inside the knob, especially with a shorter/slimmer/tapered post, and/or the redesigned knob/magnet holder that other users have made. (will probably use Akira28hk's mod for testing lots of springs, anyway) Any suggestions?

[relikd]

Sure, you can try my spring design. I settled on 2.5mm height (+spacer = 4mm). I merged both objects in the Slicer, so I have a single spring. But you can also print the spacer separately and stack them. Just one question, you did use PETG for the spring right? Because even the two half-springs should hold longer than you described.

3D files

I've also made magnets holder v2

We have some vertical space inside the knob

That was actually my most limiting factor. Not enough space to fit a good amount of spring. I dont understand what you mean by the remaining sentence.

[relikd]

Another way to go would be to place the spring on the same height as the magnets. That should improve tilt motion. But the magnets take even more space and then there is nothing left for the springs.

But apart from that, as you already said, the more you use it, the more you get used to the motion. It will get easier to perform the rotation you want.