One thing I noticed when using this punch, which has worked well for me in the 200+ circles I've made, be sure to punch all the way through. If you don't make a clean complete punch (as far down as it will go), it can get stuck. The few times it was really stuck, I was able to get it open again by pushing on one of the metal dies with my burnishing tool. Good luck and I hope this helps. I've been very satisfied with the results I've had.