Rawlings Synthetic Sparring Sword Wheel Pommel

This is a rough copy of the standard wheel pommel used on Rawlings synthetic sparring swords. The measurements are approximate, and I haven't printed it, so you're on your own. But if all goes well, you should be able to glue an M8 nut into the hole at the bottom and screw it onto your sword. I included a tolerance of 0.1mm for the nut, which you can adjust by changing the variable.

I've added the variable captive_nut, which when set to 1 will give you a hexagonal hole in the base to hold a n