What is the Best Type of Drill Bit for Hard Metal Above HRC50?
Last week, our team received an urgent email from a client in Ohio. Their machine shop was rushing a batch of heat-treated H13 tool steel parts with a hardness reaching HRC54. The client was blunt: “We tried three ‘ultra-hard’ drill bits on the market. They either chipped during centering or melted before reaching a depth […]
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