I am in need of a rotary knob with a 6mm D shaft.
I found one on Thingiverse, however, the diameter and height is too big. To confirm whether the style was correct, earlier I printed the one in the attached file, and, as expected, it's too large (it covers writing on the front panel).
My slicing software allows me to scale it, however, it also scales the D shaft hole.
Attached is the zip file from Thingiverse.
Does anyone have software that will scale it without affecting the center shaft hole size?
It needs to be approx. 13mm height, 18mm diameter at the inside end, 17mm at the outside end, and the inside needs to be 3.15mm hollow before the D part of the hole starts (if this makes sense).
Trying to tweak the hole for the shaft may not be feasible, but thought to throw out that size too.
This knob is for an adjustable power supply. The knob broke and was thrown out by someone. If the knob is too large in diameter, it covers writing on the front panel. If the shaft is too deep, then the button can't be pressed (it rotates and also has a on/off press function). I thought to try making one myself on SketchUp, but I wouldn't know how to create the side notches.