Knob

thingiverse

The knob for control panel on a MEP-002A or MEP-003A generator is ready to print. To make printing easier, I am upside down on a raft, and you won't encounter any issues with small outside overhangs. If you prefer it right side up, just remove the top-level rotate() near the scad file's beginning. Keep your metal center out of the old knob, insert it small end first into this new one so set screw holes align. It's crucial that the original doesn't fit all the way down - instead, press until they line up and stop. I strongly recommend using longer set screws, ensuring they also engage with the plastic to secure them firmly in place.