I like to sand and reduce my arrows by chucking them up in a drill and spinning them against my belt sander. Too often though the chuck cuts into the shaft, loosens up and fires the arrow across the room. Does anyone have a real clever idea for holding the arrow securely in the drill? I tried standing on the other side of the belt sander so the rotation was pushing the arrow into the drill but it still loosens and wobbles a lot. It's a bit better than bare shaft testing my arrows with a belt sander but not much. Any ideas?