[magnets]

If this works, it would be awesome. I hate those e4p encoders with a passion, and buying new s4's for both the practice and competition bot isn't cheap.

As for 3D printing threads, I haven't had any luck printing a slightly smaller 7/16-14 thread on a 3d printer, but the printer wasn't great and I only tried it once. You may have better luck, especially if you have a fancy printer. It doesn't look like it would be too hard to make the threaded part out of a piece of aluminum on a lathe.