cleaning holes

Discussion in 'General Fabrication' started by ablecnc, Jan 25, 2018.

  1. ablecnc

    ablecnc Active Member

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    when plasma cutting holes what type of drill bit is there that can drill threw the temper part I jus burn bits up
     
  2. LECS-Chad

    LECS-Chad Moderator Staff Member

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    yupo...

    I personally make a .060 size hole for a drill center and just use it for placement. Under-sizing a hole and trying to drill empties the wallet with ruined drill bits.
     
  3. ablecnc

    ablecnc Active Member

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    what the dill are you using after the material is tempered due to heat
     
  4. Larry Cameron

    Larry Cameron Well-Known Member

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    I use a cobalt drill bit. Well I think they are about 5% cobalt.
    Larry Cameron
    RusticMetalArt
     
    Don Powell Jr likes this.
  5. Kevin Lipka

    Kevin Lipka New Member

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    Go to harbor freight and get the warrior brand step bits they drill with ease and last a long time for up to 1/4" thick. For thicker I don't plasma cut the holes.
     

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