This thing is heavy, get your fingers in the wrong place at the right time and you mash something real good. Makes plastic back buttons like a champ and it came with about 50 of those sets. To make metal back buttons you must insert a rubber washer on the back side. Two come with the machine, I do not know if both are required to make buttons, but graphic stock thickness makes a difference on success rate of crimp. It comes with 100 pieces of round paper, I do not know why, they are blank. If you are artistically inclined, I guess you have a 3" opportunity to create by hand original graphics for your buttons.