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General Mach Discussion / I Keep Breaking Engraving Bits....
« on: May 08, 2011, 04:44:30 AM »
I've been running my Taig CNC and every time I try and engrave, I end up breaking bits. I'm setting my code to do .001" per pass and 3IPM. I'm trying to engrave a piece of hardened steel (Uzi bolt) and it started engraving fine, but then the bits chip. I usually get about 20% of the way through before they break. What is the best way to fix this? Slower passes? Faster spindle speed? Cut less per pass? Any help would be GREATLY appreciated.