Yet another OpenSCAD model. This time its a replacement knob for a camp stove.
The spindle one stove is around 6.4mm dia, with a flat.
I tweaked the design to get the knob to fit snugly onto the spindle, but doing about 4 test prints, until I got the size just right. But rather than printing the knob at full height, I only printed the first 5mm. I also commended out the splines on the outside while doing test prints, and reduced the diameter a bit, to speed up printing.
Then when the centre fitted well, I uncommented the code and printed the full version.