[TheForge] Fly press question

[Chuck Robinson]

Hey James,
I believe the fine tpi presses are better suited for cold work, where speed 
is less important than pressure.
The coarse tpi machines move the hot metal more efficiently, before the dies 
suck the heat away.
 Pre heating the dies can help.
There supposedly are presses with compound screw pitches and a  pressure 
activated compound nut that changes from coarse to fine pitch when 
resistance is met.
Chuck

----- Original Message ----- 
From: "James Binnion" <jbin at well.com>
To: "Sponsored by ABANA" <theforge at mailman.qth.net>
Sent: Sunday, July 03, 2005 10:23 PM
Subject: [TheForge] Fly press question


>I have the opportunity to get a fly press that has a  finer pitch thread 
>(2.25 tpi) than the ones from old world anvils. Any pros or cons to his 
>finer pitch? I am wondering how this affects its use. I would think it 
>would give higher pressure but slower advance of course. Any info on this 
>would be helpful.
>
> Thanks
> -- 
> Jim Binnion
>
> James Binnion Metal Arts
> Phone (360) 756-6550
> Toll Free (877) 408 7287
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> jbin at mokume-gane.com
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