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  1. #1

    Default Hole punching machines.

    Hi, I'm struggling to find a machine/press to punch 25mm/1 inch holes at 8 inch intervals. The steel is 50mm box steel for power racks. I've been drilling them by hand but its very time consuming.
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  2. #2
    Join Date
    Aug 2004
    Location
    Milan Michigan
    Posts
    1,697

    Default

    Get a drill press, Punching will only crush the tube unless you have some very special machinery, The average iron worker cannot punch tube.

  3. #3
    Join Date
    Sep 2005
    Location
    Salem ,Ohio
    Posts
    3,900

    Cool

    Hole saw and a drill press...Bob
    Bob Wright, Grandson of Tee Nee Boat Trailer Founder
    Metal Master Fab Salem, Oh 44460
    Birthplace of the Silver & Deming Drill
    1999 MM185 w/185 Spoolgun,1986 Thunderbolt AC/DC
    Spool Gun conversion. How To Do It. Below.
    http://www.millerwelds.com/resources...php?albumid=48

  4. #4
    Join Date
    Nov 2010
    Posts
    265

    Default

    High speed milling bit and machine works great too.

  5. #5
    Join Date
    Oct 2012
    Location
    yuba city, CA
    Posts
    49

    Default hougen roto broach

    If the tube wall thickness is 3/8" (10mm) or less, the Hougen 1" roto broach on mandrel, SLOWest SPEED WITH CUTTING OIL in drill press ( as sold in their electrician's kit) will be faster, more accurate and outlast a twist drill or hole saw--every time. You can buy the mandrel and the cutter separately from distributors.

    These are the shallow depth roto broaches--not the full size, mag drill broaches.
    I've used hougen cutters extensively for 22 years.
    The reason some pro shops don't use them is, of course, that they're too cost effective.

  6. #6
    Join Date
    Aug 2012
    Location
    Hermiston Oregon
    Posts
    237

    Default

    Use a mag drill. And jig it up.
    .
    Miller Bobcat 225NT onan
    Millermatic 211
    Spoolmate 100
    (Retapped to fit regular mig tips)
    Work better & less parts to stock.
    Miller 130xp
    T/A Dragster 85 (portability 11 pounds)
    Oxygen/Acetylene torch set 50'
    2. 4-1/2" grinders
    1. 9" grinder
    14" Makita chop saw
    1/2" Aircat impact gun 900#

  7. #7

    Default

    Guys thanks very much, I'm going to use every method I can afford! Thank you again.

  8. #8
    Join Date
    Apr 2008
    Location
    dallas,tx
    Posts
    207

    Default

    Miller 350P
    Miller Econotig
    Milwaukee Dry saw
    Evolution Dry saw (for sale)
    Scotchman 350 cold saw
    7x12 bandsaw
    1910 ATW 14 x 72 lathe
    fridge full of adult beverages
    Sirius radio

    www.snpequipment.com
    callouses and burns a plenty

  9. #9
    Join Date
    Aug 2008
    Posts
    113

    Default

    i would love to see a video of how that death trap works

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