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Plasma Cutter For Knife Maker

Discussion in 'Steel, Hardware, & Handle Material' started by Daniel P, Mar 15, 2019.

  1. Daniel P

    Daniel P New Member

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    i have not made my first knife yet... waiting for material
    I do have a plasma cutter in my shop
    Do any knife makers rough out blades with a plasma
    Instead of grinding with a cut off wheel?
    Just wondering

    Daniel P
     
  2. dancom

    dancom Dust Maker Best Shop Tool

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    I've seen people using the plasma cutter to cut blanks from giant saw blades, leaf springs and such. I use a bench mounted Porta-Band. It's a game changer compared to the old hacksaw method I used on my first few knives.
     
  3. Daniel P

    Daniel P New Member

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    I guess if I stay on the outside of the line the heat wont effect the steel
     
  4. dancom

    dancom Dust Maker Best Shop Tool

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    If it's air hardening steel then yes expect the heat from the plasma cutter to harden the steel around the cuts. I noticed this when welding some AEB-L. If it's carbon steel like leaf springs and old saw blades then the cooling rate should be way slower than that required for hardening. Ultimately you are going to harden it again, so not a big deal using the plasma to get a blank cut out.
     
  5. cuatroXcuatro

    cuatroXcuatro Active Member

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    Would be really handy to have one of those, I find manually cutting the blank out to be the most disagreeable part of the whole process.
     
  6. ToddR

    ToddR Putterer, Tinkerer, Waster of Time Staff Member

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    I agree. Though investing in the portable bandsaw has really made a huge difference for me. It somehow still manages to come out a bit different than draw though : )
     
  7. dancom

    dancom Dust Maker Best Shop Tool

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    Daniel. Don't plasma your Nitro-V. It is air hardening steel and will be become very hard around the cuts.
     
  8. Daniel P

    Daniel P New Member

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    10/4 copy that
    No plasma on stainless
     
  9. cuatroXcuatro

    cuatroXcuatro Active Member

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    I have a portable bandsaw and learned the hard way not to try to cut stainless when I tried with some CPM154, it destroyed the saw blade.
     
  10. Toby Schmid

    Toby Schmid New Member

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    NO bandsaw and no plasma - how does one cut stainless. Not being snide - never have dealt with stainless before.
     
  11. dancom

    dancom Dust Maker Best Shop Tool

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    My first SS knives I cut the rough shapes with a hacksaw. I used an 18 tpi bi-metal blade. I good vise also helps a lot. Annealed stainless isn't much different to work with than other steels, except a little tougher as it has chromium and vanadium in it.
     

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