First center punch. Really pleased. in Slitters, Punches, Drifts, etc Posted December 24, 2019 Just as a pragmatic point, I have had the best luck making center punches by grinding old star drill bits. There seems to be a good supply at attractive prices and they are pretty durable. I don’t heat treat them at all... just regrind the points, cut to length and profile grind the struck ends. I’ve tried various steels and heat treats... but these are cheap, easy and reliable!