The hollow punches came from my shop. Now I have some here and at the shop. Ill dang sure check out utube and sharpen the new ones!! It's nice to have a drum to experiment with before I go and screw up the real project...
You can sharpen the hole punches yourself. There's quite a few vids on you tube of different ways to sharpen them. No need to go buy new ones when they get dull. Just a FYI on that. This is a realy cool thread and thanks again for taking the time to show and picture your process. My LBP floor tom has 3 extra holes from some the wrong leg mounts. I plan to try my hand at patching them thanks to your thread. Nice job. :)