Im not very creative like you guys but i will share my creation. Very easy to do. I just do everything by eye. Nothing fancy. (Im shooting it.) I love reactive targets. Hate paper. I use a simple angle grinder, two clamps and locking pliers to twist the arm. The drill press helps cutting the hole, but a hand drill can be used. I usually hang the spinners off of a tree using a house gutter spike (Long thick aluminum nail) or something similar. I have made quite a few and they work great. I eventually will make a target box that can be moved but don't have the time now. After shooting j ust repaint when necessary. I will let the pics do the talking. Thanks.