Unibit Stepbit conspiracy theory
Close
Login to Your Account
Page 1 of 4 123 ... LastLast
Results 1 to 20 of 67
  1. #1
    Join Date
    Apr 2015
    Country
    UNITED STATES
    State/Province
    Oregon
    Posts
    17
    Post Thanks / Like
    Likes (Given)
    14
    Likes (Received)
    5

    Default Unibit Stepbit conspiracy theory

    So I'm pretty sure now that in some dimly lit conference room, thick with cigar smoke, there are a group of Billionaire tool manufacturers laughing at the ridiculous price tag they throw on multi-size sheet metal step drills. I just paid $60 bucks for a 3/16" - 1" bit..... And it appears they have all agreed never to manufacture them in carbide, because if the bit would stay sharp for a little while, then they wouldn't be able to sell you a new HSS one for $60 when your buddy roasts your bit trying to drill a dry hole through 3/8" 304 Stainless... End rant1fah2_as01.jpg

  2. #2
    Join Date
    Dec 2008
    Location
    Vt USA
    Posts
    6,002
    Post Thanks / Like
    Likes (Given)
    530
    Likes (Received)
    1836

    Default

    Surface speed does have meaning.

    I defy anyone to make a step bit for less than the selling price (given the 100% retail mark up) ;-)

    coolant and cutting compounds go a long way.

    Do you need a burnt up 1/8th to 1/2 to complete your set?

  3. Likes digger doug, tjnak, SamH, roysol liked this post
  4. #3
    Join Date
    Apr 2015
    Country
    UNITED STATES
    State/Province
    Oregon
    Posts
    17
    Post Thanks / Like
    Likes (Given)
    14
    Likes (Received)
    5

    Default

    Lol CalG, no thanks, I have a full set, burnt up, twice over, though the problem is undereducated workers, which just ends up being my fault also

  5. #4
    Join Date
    May 2009
    Location
    Friday Harbor, WA
    Posts
    116
    Post Thanks / Like
    Likes (Given)
    35
    Likes (Received)
    36

    Default

    For the life of me I can never figure out when to use one.

  6. #5
    Join Date
    Sep 2007
    Location
    Woodinville, WA
    Posts
    1,701
    Post Thanks / Like
    Likes (Given)
    183
    Likes (Received)
    345

    Default

    when? sheet metal.. they work great.

  7. #6
    Join Date
    Mar 2007
    Location
    wisconsin
    Posts
    124
    Post Thanks / Like
    Likes (Given)
    144
    Likes (Received)
    118

    Default

    Drilling through anything other than sheet metal (like they do on American Chopper) is asking for failure.

  8. #7
    Join Date
    Dec 2007
    Location
    Central Ohio USA
    Posts
    3,549
    Post Thanks / Like
    Likes (Given)
    32
    Likes (Received)
    1571

    Default

    Gotta be the easiest-to-sharpen bit in the world, though, if you don't let it get too far gone.

    Don't know if "conehead drills" are still available. Basically a little-to-big smooth taper. A step-drill with a ramp instead of steps.

    Chip

  9. Likes smalltime, sticks liked this post
  10. #8
    Join Date
    Jan 2010
    Location
    Kansas City
    Posts
    2,788
    Post Thanks / Like
    Likes (Given)
    1252
    Likes (Received)
    1798

    Default

    Quote Originally Posted by Ironwoodsmith View Post
    For the life of me I can never figure out when to use one.
    I have three of them that I use for Hoffman control boxes. O do keep the RPMs down, and use a little oil.

    If you hand one to a Hispanic maintenance man they will normally come back "needing sharpening".

    Mine are locked in my toolbox for this very reason.^^^^^^^

  11. Likes Kiwi2wheels, ranchak liked this post
  12. #9
    Join Date
    Oct 2006
    Location
    williamsburg va
    Posts
    7,887
    Post Thanks / Like
    Likes (Given)
    839
    Likes (Received)
    1713

    Default

    Something tells me that a carbide step drill would soon have chunks missing from the cutting edges.

    Carbide never does well unless the work and the drill (or the insert,etc.) are rigidly supported.

  13. Likes Mcgyver, sticks, Kiwi2wheels liked this post
  14. #10
    Join Date
    Dec 2007
    Location
    N.E. oHIo, USA
    Posts
    2,358
    Post Thanks / Like
    Likes (Given)
    0
    Likes (Received)
    1368

    Default

    Quote Originally Posted by asawelding View Post
    [SIZE=3]So I'm pretty sure now that in some dimly lit conference room, thick with cigar smoke, there are a group of Billionaire tool manufacturers laughing at the ridiculous price tag they throw on multi-size sheet metal step drills.

    Actually, they're laughing at the dip-shits that lend their step bit to their clueless friends!




    Rex

  15. #11
    Join Date
    Dec 2004
    Location
    MA
    Posts
    98
    Post Thanks / Like
    Likes (Given)
    26
    Likes (Received)
    33

    Default

    I find the problem is drilling SS with them as the design of the bit tends to work harden the SS. If you drill a stainless electronics enclosure (Hoffman) with one they will drill one hole before sharpening; oil helps and heavy pressure.

    Carbide might help in a super-tough grade as they mostly get burnt right about the time you are getting to the diameter you want.

    Maybe using one in a Cole drill would help.

  16. #12
    Join Date
    Aug 2005
    Location
    Toronto
    Posts
    4,816
    Post Thanks / Like
    Likes (Given)
    2718
    Likes (Received)
    3001

    Default

    I agree, they are ridiculously priced....where's the competition?

    It annoyed me enough that I made one once. Worked out ok, but not great. you have to put clearance on each step, which did, but I didn't put enough so cutting action was ok but not great.

    Its not like you are getting Guhring quality or something, you'd think the hardware store ones would be $3.99.
    Last edited by Mcgyver; 05-03-2015 at 11:47 AM.

  17. Likes asawelding liked this post
  18. #13
    Join Date
    Nov 2007
    Location
    marysville ohio
    Posts
    8,619
    Post Thanks / Like
    Likes (Given)
    2439
    Likes (Received)
    5465

    Default

    I use then all the time and have had some of them for years, they last a long time if you are not a clueless idiot.

  19. Likes adama, SND, digger doug, Botje, 9100 liked this post
  20. #14
    Join Date
    Jan 2010
    Location
    Kansas City
    Posts
    2,788
    Post Thanks / Like
    Likes (Given)
    1252
    Likes (Received)
    1798

    Default

    I find the problem is drilling SS with them as the design of the bit tends to work harden the SS. If you drill a stainless electronics enclosure (Hoffman) with one they will drill one hole before sharpening; oil helps and heavy pressure.
    I've never used a S.S. Hoffman, only the standard.

    And yes, drilling a starter hole helps tremendously.

  21. #15
    Join Date
    Dec 2008
    Country
    UNITED STATES
    State/Province
    New York
    Posts
    8,152
    Post Thanks / Like
    Likes (Given)
    0
    Likes (Received)
    2165

    Default

    Quote Originally Posted by asawelding View Post
    So I'm pretty sure now that in some dimly lit conference room, thick with cigar smoke, there are a group of Billionaire tool manufacturers laughing at the ridiculous price tag they throw on multi-size sheet metal step drills. I just paid $60 bucks for a 3/16" - 1" bit..... And it appears they have all agreed never to manufacture them in carbide, because if the bit would stay sharp for a little while, then they wouldn't be able to sell you a new HSS one for $60 when your buddy roasts your bit trying to drill a dry hole through 3/8" 304 Stainless... End rant1fah2_as01.jpg
    .
    if you want a 3/8" hole then use the 3/8" unibit which is much cheaper. you pay a lot more for the extra diameter you are not using

  22. #16
    Join Date
    Jun 2008
    Location
    Bellingham, WA
    Posts
    3,630
    Post Thanks / Like
    Likes (Given)
    856
    Likes (Received)
    1774

    Default

    Quote Originally Posted by smalltime View Post
    <Snip>

    If you hand one to a Hispanic maintenance man they will normally come back "needing sharpening".

    <Snip>
    Probably should just let it pass, but.... Nothing like racist remarks to clarify things and help in World harmony. No "Chicom" yet in this thread?

    Denis

  23. #17
    Join Date
    Apr 2015
    Country
    UNITED STATES
    State/Province
    Oregon
    Posts
    17
    Post Thanks / Like
    Likes (Given)
    14
    Likes (Received)
    5

    Default

    Rex,

    But without clueless friends, How would anybody like you?

  24. Likes adama liked this post
  25. #18
    Join Date
    Dec 2004
    Location
    uk
    Posts
    12,403
    Post Thanks / Like
    Likes (Given)
    3426
    Likes (Received)
    5530

    Default

    I find them fine in stainless, even starting the hole, but yeah i do often adjust cutting speed as i get to the larger diameters. I find the dead cheap ones crap, but any decent branded ones work well and last more than long enough. I use them a lot for electronic enclosures in everything from plastics - stainless 316. I also often need to enlarge holes (recent job was replacing some damaged E stops, new ones needed a bigger hole) They pic up on existing punched holes real well and still make a lovely round hole in any thickness steel right upto the step height.

  26. Likes digger doug liked this post
  27. #19
    Join Date
    Jun 2010
    Country
    UNITED STATES
    State/Province
    Pennsylvania
    Posts
    316
    Post Thanks / Like
    Likes (Given)
    211
    Likes (Received)
    81

    Default

    Quote Originally Posted by smalltime View Post
    If you hand one to a Hispanic maintenance man they will normally come back "needing sharpening".
    Racist much?

  28. Likes cyanidekid liked this post
  29. #20
    Join Date
    Jan 2003
    Location
    Canada
    Posts
    10,743
    Post Thanks / Like
    Likes (Given)
    4557
    Likes (Received)
    2914

    Default

    Most people I've seen trying to use them in a hand drill run the thing as fast as the drill can go and pretty much friction cut their way through...

    Price for countersinks is a little nuts too for what they are


Bookmarks

Posting Permissions

  • You may not post new threads
  • You may not post replies
  • You may not post attachments
  • You may not edit your posts
  •