[TheForge] Re: uri hammer

[Grover Richardson]

Hi there Mike.  Hmm.  Looking at the web page, I wonder if you ever figured
out the energy imparted to the hot iron by the hammer head?

>*>-----Original Message-----
>*>From: theforge-bounces at mailman.qth.net 
>*>[mailto:theforge-bounces at mailman.qth.net] On Behalf Of Mike Spencer
>*>Sent: Thursday, November 03, 2005 6:36 PM
>*>To: theforge at mailman.qth.net
>*>Subject: [TheForge] Re: uri hammer
>*>
>*>
>*>
>*>> Why would a hammer of equal weight move more metal if in a 
>*>different 
>*>> design?  Seems to me that the mass on the end of the 
>*>stick/handle is 
>*>> the same?
>*>
>*>It matters how fast the hammer is moving when it hits the 
>*>workpiece. And how hard you have to exert yourself to get it 
>*>moving that fast or, alternatively, what maximum speed you 
>*>achieve when working at a comfortable rate.  Different 
>*>balance, different grip, different posture etc. would mean 
>*>different terminal speed at a given level of exertion and a 
>*>different fatigue factor.
>*>
>*>I did a bit of related messing around some time ago.  See:
>*>
>*>   http://home.tallships.ca/mspencer/hammer.html
>*>
>*>I have some more high-speed images and mean to get back to 
>*>them Real Soon Now. :-)  It would be interesting to do a 
>*>comparative high-speed photo study of several smiths and/or 
>*>hammers.  But I don't know where I'd get access to now to a 
>*>suitable camera.
>*>
>*>
>*>- Mike
>*>
>*>-- 
>*>Michael Spencer                  Nova Scotia, Canada       .~. 
>*>                                                           /V\ 
>*>mspencer at tallships.ca                                     /( )\
>*>http://home.tallships.ca/mspencer/                        ^^-^^
>*>
>*>-- 
>*>
>*>
>*>
>*>
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