Remixed from: https://www.thingiverse.com/thing:257150

I tightened up the hole by 0.5%, and also made it a bit deeper so the knob sits closer to the mixer. I also rotated the outer end of the knob 45 degrees to match the orientation of the original knob.

This knob is still slightly oversized from the original, but I like the larger size better, plus it helps with strength.

I printed this in PETG with 100% infill. I'm sure it was overkill, but it's such a small part that it really doesn't matter. I'd rather not have it break again.

Use a very small layer height for the best results.

Happy printing!