After seeing a post on the board about pin cushion made with sand blasting sand or Glass blasting beads both can be get at harbor freight. I made pin cushion out of both. both are gone to stay in place. I have pin cushion out of both look them both. My son also had some walnut hull and I try one out of this as well and I can tall that anyone is any better them other. You can only get blasting thing in only big bag is the only bad thing.