When I was drilling through a hardened steel I went to a specialty metals shop and they recommended cobalt bits. They were also much cheaper than lows but unfortunately have since gone out of business ...

1 - The Modding Toolbox: A Guide to Drill Bits 2 - Speciality Bits: Centre Drills and Countersinks 3 - Big Holes: Stepped Drills and Hole Saws Next Hello everybody, and welcome to what I hope will ...

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Every farmer or mechanic has a drawer stocked with dull or broken drill bits. The plan is that “someday” we’ll take time to sharpen them…probably the second Tuesday of next week. Here are tips to ...