How to Drill Stainless Steel Without Breaking Bits
Why stainless steel breaks ordinary drill bits Stainless steel — especially 304 and 316 — work-hardens the moment the cutting edge rubs instead of cuts. The surface jumps from roughly 180 HB to 300+ HB in seconds, and a standard HSS bit that was cutting fine suddenly stops cutting and starts rubbing. Heat builds, the […]
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