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From: "Carl Ijames" <carl.delthis.ija...@verizon.net>
Newsgroups: sci.electronics.design,alt.binaries.schematics.electronic,sci.electronics.cad,sci.electronics.basics
Subject: Re: Knuckle Buster Replacement
Date: Fri, 2 Nov 2012 18:53:29 -0400
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"Jim Thompson"  wrote in message 
news:ru7698pkk06eafv13vulgolj6mehrvqj4m@4ax.com...

On Thu, 01 Nov 2012 20:41:16 -0400, Spehro Pefhany
<speffS...@interlogDOTyou.knowwhat> wrote:

>On Thu, 01 Nov 2012 17:18:23 -0700, the renowned Jim Thompson
><To-Email-Use-The-Envelope-I...@On-My-Web-Site.com> 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

That link at roper whitney is for the light duty punches.  Go to the pull 
down labeled punching and select medium duty for the next step up in 
punching capability for the same hand pressure.  Go the next step and look 
at a #10 or #12, I got a #12 on ebay a few years back for $50, does 7 tons 
of force with less muscle than you used to bust your knuckles on the little 
one :-).

-- 
| James E.Thompson, CTO                            |    mens     |
| Analog Innovations, Inc.                         |     et      |
| Analog/Mixed-Signal ASIC's and Discrete Systems  |    manus    |
| Phoenix, Arizona  85048    Skype: Contacts Only  |             |
| Voice:(480)460-2350  Fax: Available upon request |  Brass Rat  |
| E-mail Icon at http://www.analog-innovations.com |    1962     |

I love to cook with wine.     Sometimes I even put it in the food.



-----
Regards,
Carl Ijames