Hole punching machines.

[Bossman2000]

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.

[Portable Welder]

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

[aametalmaster]

Hole saw and a drill press...Bob

[Dipsomaniac]

High speed milling bit and machine works great too.

[dave powelson]

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.

[eecervantes83]

Use a mag drill. And jig it up.

[Bossman2000]

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

[STRENGTH AND POWER]

this is all you need

http://www.youtube.com/watch?v=FYLhQ2XWfX8

[mikesystem]

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