Bowling Ball Mold

This is a 2 part mold (with a plug, so technically 3 parts) for making a bowling ball. The bowling ball in question was made out of cement, but I'm sure with the right release agent you can use it to mold other materials. I printed the mold out of PETG. 

Boost MeDew it no balls. You won't boost me. (jk, please boost it really would help)