[TheForge] Power hammer Vs air hammer

[Grover Richardson]

PSI is PSI<G>.

>*>-----Original Message-----
>*>From: theforge-bounces at mailman.qth.net 
>*>[mailto:theforge-bounces at mailman.qth.net] On Behalf Of Demon Buddha
>*>Sent: Tuesday, May 23, 2006 7:34 PM
>*>To: Sponsored by ABANA
>*>Subject: Re: [TheForge] Power hammer Vs air hammer
>*>
>*>
>*>
>*>
>*>Rich Maynard wrote:
>*>> My suspicion is that with a compressible fluid you would 
>*>not be able 
>*>> to rely on positioning like that unless you incorporated 
>*>some kind of 
>*>> feedback.
>*>
>*>	Well, I'm not necessarily looking for precisely that 
>*>sort of precision, 
>*>but only something in the ballpark.  Also, compressibility 
>*>for a given 
>*>mass (ram) is largely dependent on the volume of air.  As the volume 
>*>increases, the ram becomes "stiffer" in its motion.
>*>> 
>*>> An optical sensor connected to a wee microcontroller ought 
>*>to do it, 
>*>> and a rotary sensor on the treadle.
>*>
>*>	Oh sure, one could do it digitally, but I live in a 
>*>digital world and 
>*>am sick of it, to be honest.  I'm looking for something a little 
>*>older-fashioned and simple.
>*>> 
>*>> Hammer-by-wire, anyone?
>*>> 
>*>> Of course, such delicate electronics have no place in a 
>*>smith's shop!
>*>
>*>	There you go. :) _______________________________________________
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