Test fit your rivets in the butterfly blank hole. As you can see in Photo 15, the rivet head was too big for the blank. With flat nose pliers and a needle file, file down the rivet head to better fit the butterfly. Place the rivet in the butterfly and titanium stack and using the riveting hammer, rivet closed. Use the round head of the ball peen hammer and gently hammer the rivet head to texture it, so it matches the butterfly. At the top of the titanium strip, punch a hole for the ear wires, add your ear wires and you are done.