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What's the best drill bits to use?

Discussion in '1973-1991 K5 Blazer | Truck | Suburban' started by Mudstud, Aug 7, 2001.

  1. Mudstud

    Mudstud 1/2 ton status

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    What\'s the best drill bits to use?

    Got some drilling to do on my frame. Two holes up to 1/2". I'm wondering what's the best drill bits to use on hard steel like this. Is there a difference drilling frame steel as opposed to mild steel? Can I just use a regular hole saw or should I graduate bit sizes up to the proper diameter or do they make a super dooper bit that'll chew right through it?

    Stuck is a state of mind!

    Mudstud
    76K5 sb400/350/203parttime/3.73-D44/GM12 locked
     
  2. ChevyCaGal

    ChevyCaGal 3/4 ton status

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    Re: What\'s the best drill bits to use?

    I have tried out a bunch and most work... just keep them well oiled up and give them breaks every so often to cool down... The best results I ever had were with the cobalt bits... I broke one I used it so much and took it back to Sears and they replaced it. Good deal if you ask me! [​IMG]

    C'mon captain break pedal... quit looking for the parade and drive!! [​IMG]
    <a target="_blank" href=http://www.chevycagal.homestead.com/steph.html>www.chevycagal.homestead.com/steph.html</a>
    &lt;&gt;&lt; MARK 1:17 &gt;&lt;&gt;
     
  3. ImpalaSS

    ImpalaSS 1/2 ton status

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    Re: What\'s the best drill bits to use?

    titanium coated ones rule..... i bought a set from dewelt that are titanium coated and they work very very well

    68 SWB 4x4 1 of 1,449 made 327, 465 4 speed, rockwell tcase, edelbrock performer intake+carb, MSD pro billet http://communities.msn.com/68K10
     
  4. shane

    shane 1/2 ton status

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    Re: What\'s the best drill bits to use?

    norsemen are the best... we use them at work on hardened steel, work pretty well. When you drill, start with a small pilot hole and work your way up bigger and bigger.

    Shane

    Never argue with idiots; They will drag you down to their level and beat you up with experience [​IMG]
     
  5. Medman74K5

    Medman74K5 Registered Member

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    Re: What\'s the best drill bits to use?

    I've had good luck with titanium coated bits. Haven't broke one yet.
     
  6. Storm Trooper

    Storm Trooper 1/2 ton status GMOTM Winner

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    Re: What\'s the best drill bits to use?

    Yes there is a difference. The titanium bits hold up better in my opinion. As for hole saw bits. I recomend Lenox brand bits. I use them all the time for work and have found them to also hold up better than others. You may want to use a titanium pilot bit or pre drill the hole for the hole saw with one. Most of the hole saw pilot bits are junk. If you need to cut some hard metal like spring bolts etc. Lennox makes a grit type saws all blade that works great and holds up. I tried standard metal blades and they kept frying. The grit edge blades just kept cutting and cutting. I was suprised. I didn't even think they would cut much. There is a bit recommendation under the Potent Rodent (Shawns project) when installing rock sliders. <a target="_blank" href=http://offroad.com>offroad.com</a>
    By the way, working up in size is a good idea with reg. drill bits (helps them last).
    Good luck, hope this helped Dan.

    [​IMG]<font color=red>[/b]"Rid'in HigH in my K5"[​IMG]
    ....[​IMG]<font color=blue>[/b]"8" Lift -<font color=purple>38.5's"[​IMG]....
     
  7. BlazerGuy

    BlazerGuy 3/4 ton status

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    Re: What\'s the best drill bits to use?

    Yes get some titanium coated bits they last the longest and are worth the extra bucks

    ~~'84 K5~~
    Check it out at:
    <a target="_blank" href=http://www.k5.rockcrawler.com>www.k5.rockcrawler.com</a>
     
  8. Mudstud

    Mudstud 1/2 ton status

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    Re: What\'s the best drill bits to use?

    Thanks guys. Appreciate it.

    Stuck is a state of mind!

    Mudstud
    76K5 sb400/350/203parttime/3.73-D44/GM12 locked
     
  9. ImpalaSS

    ImpalaSS 1/2 ton status

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    Re: What\'s the best drill bits to use?

    also the dewalt ones have little pilot holes on the end which really help

    68 SWB 4x4 1 of 1,449 made 327, 465 4 speed, rockwell tcase, edelbrock performer intake+carb, MSD pro billet http://communities.msn.com/68K10
     
  10. michaelm

    michaelm 1/2 ton status

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    Re: What\'s the best drill bits to use?

    SHARP ONES are best
     
  11. Mreetz

    Mreetz 1/2 ton status

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    Re: What\'s the best drill bits to use?

    Someone else's.........

    1984 K-5
    4" lift
    35x12.5 MTs
    buildin a 400 for it, any info greatly appreciated
     
  12. michaelm

    michaelm 1/2 ton status

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    Re: What\'s the best drill bits to use?

    Hey those are the ones that i used, they worked great...for a while
     
  13. TwoCrowsDesign

    TwoCrowsDesign 1/2 ton status

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    Re: What\'s the best drill bits to use?

    I did it both ways, right to business with a 1/2" bit (seemed to take forever), then I started small and graduated to 1/2" (1/4", 3/8", 1/2") Seemed to quicker.

    Use sharp bits and slow speed also use cutting fluid to lube.

    John

    John
     
  14. 45acp

    45acp 1/2 ton status

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    Re: What\'s the best drill bits to use?

    The frame steel is actually mild steel. The drill bits that you should use are Colbalt Screw Machine length (short) not Hight Speed Jobber length (long) and the other posts are correct when they say use several graduated steps up in size and use lots of cutting oil and slow speed on the drill motor. Heat is the worst enemy.

    <font color=red> Bill, "Shop Rat" </font color=red>
    <a target="_blank" href=http://coloradok5.com/gallery/Shop-Rat>http://coloradok5.com/gallery/Shop-Rat</a>
     
  15. Jason73K5

    Jason73K5 1/2 ton status

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    Re: What\'s the best drill bits to use?

    Go to Sears and get a Titanium Step-drill bit(uni-bit), a standard uni-bit will also work, but won't last as long. They work great for this kind of stuff. Just make sure you go slow, don't let the bit overheat, because once it does, it's worthless.

    73K-5: TBI350/TH-400/NP-203/14FF/D44
    Topless, doorless and no tailgate!
    Fresno, CA
     
  16. NoRulz

    NoRulz 1/2 ton status

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    Re: What\'s the best drill bits to use?

    I agree with Jason, Uni-Bits kick ass for drilling frames...
    So do RotaBroachs...

    My Ford has chevy parts! it's all good!
     
  17. Jason73K5

    Jason73K5 1/2 ton status

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    Re: What\'s the best drill bits to use?

    I'd forgotten about the RotaBroachs. I've gotta get me a set of them someday.

    73K-5: TBI350/TH-400/NP-203/14FF/D44
    Topless, doorless and no tailgate!
    Fresno, CA
     
  18. Mudstud

    Mudstud 1/2 ton status

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    Re: What\'s the best drill bits to use?

    So what is a RotaBroach? Thanks for all the replies.

    Stuck is a state of mind!

    Mudstud
    76K5 sb400/350/203parttime/3.73-D44/GM12 locked
     
  19. Pure Insanity

    Pure Insanity 1/2 ton status

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    Re: What\'s the best drill bits to use?

    Rotabroaches are basicly mini hole saws. They are great but they are also kinda fragile. If your going along and it grabs hard the saw part will drop teeth or shatter. Ive killed more than my fair share of them.

    Any way you go use a slow speed and plenty of oil to help cut and to cool the bit.

    I get all the excercise I need pushing my luck![​IMG]
     
  20. 4x4blazer

    4x4blazer 1/2 ton status

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    Re: What\'s the best drill bits to use?

    Snap-On rules!
     

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