Read this, the 14 gague stainless sheet was not messing around:
http://forum.arcadecontrols.com/index.php/topic,154861.msg1624353.html#msg1624353I used carbide bits( steping up sizes) to get a starter hole then the punch worked great, the carbide bits are brittle, careful not to wiggle them.
When driling, pressure and milling oil are your friend, Heat, "drill walk", and wiggly hands are your enemy. Don't break the bit or the drill will thrust forward and leave a nice dent in the steel next to your hole.
Use the punch so the spikes go in from the user side, the teeth leave a nice very slight downward bevel as they enter the die. The die side can have burrs, but super minimal, 3 seconds and an emory board will clean them up, but don't slice your finger! I left them slightly rough for button mount friction.
I used a 2' pipe extension on an 8" wrench to work the punch, took some elbow grease but nothing worse than changing a tire. Didn't lube the punch at all, but reading Ken's comment, I wish I had