They make great file handles too, but you have to be careful, a buddy lost an eye a few years back, drilled into an older golf ball, it had some sort of caustic liquid rubber center, it squirted out and up under his safety glasses into his left eye. He went right to ER, but damage was done , he lost all vision in that eye.
So be sure to wear safety glasses or better still , chemical splash proof goggles and a face shield.