The "Ball Buster" Brass Knuckles

A safer alternative to some of my other knuckles. This would probably still hurt, so don't hit anyone with them, unless of course you have to.

The profile is at 50% infill and that makes these very sturdy.

Scale to the desired size. Measure the circumference of you fingers and scale the parts in BS to be a little larger than your finger. I would suggest measuring your knuckle to make sure they fit.

Print both sides and glue them together with CA glue.