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drill bits & air drill

Discussion in 'The Tool Shed' started by K5Chris, Apr 8, 2007.

  1. K5Chris

    K5Chris 1/2 ton status

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    so, i need a 29 piece drill bit set for drilling metal. are the titanium or cobalt coated bits worth the money? snap on wants 180 for their bits and matco wants 160 something for irwin bits. not about to spend that much. i'd spend $100 for a decent set.

    what do yall think about these? or you got a better suggestion.

    http://www.thetoolwarehouse.net/shop/IRW-60138.html

    http://www.thetoolwarehouse.net/shop/IRW-73138.html

    http://www.thetoolwarehouse.net/shop/IRW-3018003.html

    http://www.sears.com/sr/javasr/product.do?cat=Power+Tool+Accessories&pid=00964073000&vertical=TOOL&subcat=Drill+Bits&BV_UseBVCookie=Yes

    http://www.sears.com/sr/javasr/product.do?cat=Power+Tool+Accessories&pid=00964086000&vertical=TOOL&subcat=Drill+Bits&BV_UseBVCookie=Yes


    my other question is, I bought an IR 7803 1/2" air drill.... it's nice, very powerful, but takes damn near forever to drill in steel, because it's slower. I used a coworkers 3/8" high speed air drill, and it cut a whole lot quicker. Is there a bit that works better for my slower more powerful drill, or should I just get a high speed 3/8" drill and stick a 1/2" chuck on it?
     
  2. Hossbaby50

    Hossbaby50 3/4 ton status

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    Make sure to get good bits. Sears generally doesn't carry alot of good bits from my experience. You are better off finding bits at places that are more supply houses for trades or Grainger or something.

    Cobalt bits are great for heavy steel with a slow speed drill. If you spin cobalts fast you will burn them up in no time. Titaniums are the ones you want if you want to spin bits fast and not kill them as quickly. Cobalts tend to be stronger then titaniums though so get the right bit for the work you are doing.

    Harley
     
  3. Confedneck79K30

    Confedneck79K30 3/4 ton status

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    if you want a good set of bits... answer one question..
    1/2" chuck or 3/8" chuck

    then pick the drill
    pdr3a=3/8 air drill
    pdr5a=1/2 air drill

    dbtb129=29 pc set, full shank
    dbtr129=29pc set reduced shank

    dont go cheap, go good
     
  4. rdn2blazer

    rdn2blazer 1 ton status Premium Member

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  5. POFF

    POFF 1/2 ton status

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    From what I have seen, 1/2" drills are geared lower. My Snap-on 1/2" is 800 RPM, if it was too fast it would rip my arm off it if the drill hung up. I only use mine for large holes. I ended up getting a surplus aircraft 3/8" on ebay, it is 3000 RPM. I would recommend staying around 2000 RPM unless you are drilling sheet metal.
     
  6. Jason4x4

    Jason4x4 1/2 ton status

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    those irwin bits matco sells are very nice though, I just got a set s couple weeks ago when they were on promo
     
  7. 84zz4ss

    84zz4ss 1/2 ton status Premium Member

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    The Irwin from Matco also have a warranty. I just replaced 1/8 1/4 3/8 for free.

    I have used them on sheet to 1/2 material including leaf springs.
     

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