I printed the cap with ABS like resin. It fit snug, so I re-printed 101% (1% larger) size and it fit nicely. This accounts for the shrink factor of resin printing. You will notice a holes on each side of the print. This was done so that the cap could be locked onto the tool. I used a straighten paper click in the photo. I doesn't need supports when printing in filament, but I always prints with supports on when printing in resin and tilt the model. This makes it stronger and also much easier to release from build plate.

Phrozen

Sonic Mini

Doesn't Matter