This is my first HDPE slingshot. Made from a laundry detergent bottle. Had to cut the mold off it because it stuck a bit and it has a few bubbles in the handle but its tough as can be. Not the prettiest slingshot and the next one will have scales on the handle, but I'm happy with it. Any suggestions on getting it to not stick in the mold? I sanded it very fine (1500 grit) and greased it as well. Thanks for looking!