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Thread: drill bit razor

  1. #1
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    Default drill bit razor

    i got a couple of old drill bits and plan on forging some razors and a small knife from them
    any tips ?
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  2. #2
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    Supposably drill bits are made from a heat resistant Steel. You'll need a higher temperature heat treat and temper cycle. It would definitely help to find out the metallurgy of the drillbit that your useing

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  3. #3
    Senior Member blabbermouth JimmyHAD's Avatar
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    Off the top of my head I'd say shoot a PM to Mike Blue, Bruno, and to Charlie Lewis. They are quite accomplished at forging steel and could probably give you something to go with. Just send a link to the thread so we could all share in the knowledge.
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    I can hear the voice in my head saying "It depends." I second the request to know the type of drill bit and its purpose. O-1 has been called "drill rod" for good reasons in the past but it makes fine razors. If you have some bits made of high speed steel (M2-M42) you will have an interesting time. Not impossible but certainly interesting.
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  6. #5
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    i have no idea about the bits because they are all either broken off where the marks where or rusted over

  7. #6
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    I don't like scrapping perfectly good steel. You can learn a lot by forging and HT'ing mystery steels. And you can have fun. If the rent depends on your efforts you risk some heartbreak with unknown materials.

  8. #7
    Heat it and beat it Bruno's Avatar
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    Like mike said it depends
    Drill bits can be anything and heat treatment will be a complete unpredictable hit or miss thing.

  9. #8
    Senior Member blabbermouth bluesman7's Avatar
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    A spark test may help with the guessing. A bright spark with a lot of staring would have me guessing High carbon steel. An orange spark with little staring and my guess would be high speed steel.
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  10. #9
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    Quote Originally Posted by bluesman7 View Post
    A spark test may help with the guessing. ...
    Indeed a fine method for someone who has a grinder. You could make a pretty close estimate without a lot of technical knowledge. This is but one example of a site with good information. Scroll down a bit for a simple picture of sparks. Properties and Testing of Metals
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  12. #10
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    i know some of my bits are hss because i got them from school when they broke
    i even forged a skinning knife from two by forge welding them together then mig welding the back and sides so the blade wouldn't be brittle then forged the welds
    i traded it for a leg of roo meat
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