Jim Thompson wrote in
:

On Thu, 01 Nov 2012 20:41:16 -0400, Spehro Pefhany
wrote:

On Thu, 01 Nov 2012 17:18:23 -0700, the renowned 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

Dunno about the ones HFright sells, but the genuine USA-made
Roper-Whitney punches are pretty decent:-

http://roperwhitney.com/punching/2-45.cfm

They come in different sizes.


Best regards,
Spehro Pefhany

That looks like what I have. I'm squeezing the dickens on the
handles, finally punches, knuckles bang adjacent sheet metal :-(

...Jim Thompson

Roper Whitney's larger one, the XX, has an optional bench mount. Also,
the deep thoat means your knuckles are a lot further away from the sheet
metal. Warning: The set of punches it comes with are slightly weird
sizes, and the extras you will want aren't cheap. One plus of the bigger
one is that it can use D-hole punches for BNC connectors.

Doug White