So 3d printed seems the way to go. I think this looks pretty good and is strong. Using PETG on my test prints here but will get resin black prints ordered once i have the size exact. The resin ones should looks nice and smooth.
Will be offering these for sale (black resin) . Gonna work out around £15 each i think.
Out of curiosity how long did it take to print? The resin should be quicker as it's doing a layer at a a time and not having to draw each and every circle. Resin printing is better for a lot of things,
I've a Saturn 2 8k and the prints are amazing, especially if using their resin, though currently just have grey. Cogs, wheels, rubber bumpers, etc... I do in the printer, then make a mold in silicone, and finally do a resin casting, as this way I can determine the shore hardness, look and colour of the final material.
Example: At the minute I've experimenting in making the Galaga 2 way joysticks. As part of the assembly they have 2 rubber bumpers of a particular shape. In the manual they're stated as a 90 Durometer material, so I'm looking at casting in different types and hardness to get as close a match as possible, something you can't do in direct 3D printing.