Jeep CJ5 3 Speed Shift Knob Two Color

I made this part for my 1971 Jeep CJ5. I needed a shift knob and actually having the shift pattern on it would even be better. The hole for screwing it onto the shifter is not threaded as the threads are very fine and I doubt they would print well anyway. I measured the diameter of the shifters threaded end and found it to be .291 inches at the bottom of the threads, so I printed this with a .290 hole and simply screwed it onto the shifter. It was pretty tight but not as tight as I wanted it so