On Thu, 01 Nov 2012 17:18:23 -0700, Jim Thompson
wrote:

I have a single-action sheet metal punch, punches holes from 3/32" to
9/32". I think I got it at Harbor Freight.

Whilst adding some extra holes to the frame of this work-bench I am
building I royally busted up my knuckles.

Is there a multi-action device out there that has real pressure
multiplication?

...Jim Thompson

Maybe the punch is not made for the guage your punching?
http://www.mcmaster.com/#hole-forming-punches/=jzp4dt

Cheers