Knurled knobs for 35mm pinhole

These are new knobs for Ciron's excellent 35mm pinhole camera. These knobs are a little larger, and I added some knurling for grip. They're easier to turn, and (to my eye anyway) a better proportion to the camera.

Designed by tracing over the original meshes in OnShape, matching the original dimensions. They are a drop-in replacement for the standard knobs, no other changes or additional parts needed.

The arrows on top are recessed 2mm and beveled in so they should print well. In my example photos i printed the first 3 layers in green for better visibility, and the rest of the part in black to keep it opaque.

I used 4 shell layers for strength, infill of 20-30% should be plenty.