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Thread: Free hacksaw blades and how to make them

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    no need to use carbide burrs, all you need to do is regrind masonry drills to resemble the top of a high speed twist drill. I often drill tempered spring steel with one, it works well and they're cheap

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    Supporting Member old_toolmaker's Avatar
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    old_toolmaker's Tools
    Another method I have used to drill holes in hardened saw blade stock is to anneal the blade in the area of the desired hole before drilling. Once annealed it can be drilled through with a standard twist drill. I do this by chucking up a pin about the same diameter of the desired hole and running it at a high speed in a drill press. The friction of steel running against steel heats the blade material to red hot. It can then be easily drilled.


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