Way Off topic, but I thought I would mention a recent learning experience, maybe you can benefit from too. I had to drill a big sheet of an unknown AR type steel for a rock crushing outfit down the road. That stuff destroyed every drill bit I had (customer insisted the holes must not be flame cut) including a high dollar cobalt spotting drill. I called an old millwright friend, he advised to NOT pilot drill clear thru, build a dam with ductseal, fill it with plain old turpentine and drill it at a speed and down pressure to give 2 continuous curls. Worked like magic...I got 4 holes before I had to sharpen the drill.
If I ever have to drill a Krag again, I will try turpentine.
