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  1. #1
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    Blowing a temper

    if you blow the temper when grinding, do you have to anneal, harden and re temper or can you just re temper?

    Dom

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    Re: Blowing a temper

    Which steel?
    Live like someone left the gate open...

  3. #3
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    Re: Blowing a temper

    the easiest thing to do is to grind back into the blade further than you have knackered the temper. Ie if you have bluing for 2mm from the edge, then grind 2mm off and start over, being more careful this time ;-) If that doesn't appeal, then you have to reharden and then re temper, before grinding and not cocking it up again
    Don't just tickle it...


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  4. #4
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    Re: Blowing a temper

    Quote Originally Posted by Basemetal View Post
    Which steel?
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  5. #5
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    Re: Blowing a temper

    Quote Originally Posted by Dave Budd View Post
    the easiest thing to do is to grind back into the blade further than you have knackered the temper. Ie if you have bluing for 2mm from the edge, then grind 2mm off and start over, being more careful this time ;-) If that doesn't appeal, then you have to reharden and then re temper, before grinding and not cocking it up again
    working with 2mm thick, cant re harden but might get away with a re temper if an option

  6. #6
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    Re: Blowing a temper

    You can't re-temper , if the temperature has gone beyond your tempering range (if it looks burnt it's dead ) then the only way to rectify is take it back up to hardening and then back down again with another temper cycle . Or has been said, very gently grind away the damaged area and adjust your grind , even this isn't advisable though really as you could end up completely wrecking it :/

  7. #7
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    Re: Blowing a temper

    Thanks for the knowledge, could do with a less frustrating hobby, still onwards and upwards

  8. #8
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    Re: Blowing a temper

    Quote Originally Posted by Deviant View Post
    Thanks for the knowledge, could do with a less frustrating hobby, still onwards and upwards
    I don't think that there is one. You should hear my wife swearing when she's doing her crochet.

  9. #9
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    Re: Blowing a temper

    Making knives is difficult and mistakes are a necessary part of learning. Try to learn what you can from it and move on.

 

 

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