[TheForge] treadle hammer anvils

Fri Jan 10 09:10:00 2003

Hey Guys,
Here's a question for all you hammer builder, regarding anvils:

This thread has been about pipe or built up versus a solid anvil.

How about a wacky alternative:
Build the anvil out of heavy wall pipe with a significantly heavy cap and base welded on, and a pipe fitting. Then pressurize the pipe as high as possible given the individual's compressor capability. Putting the "anvil" under pressure will leave the steel in tension and provide more rebound.

This used to be an old trick used by "friends" on aluminum bats in my old power plant days. They would pressurize the bats with hydrogen off the plant manifold and the softballs would fly!!!

Any thoughts?

Ray Miller
Cincinnati

> 
> From: Steve Smith <[email protected]>
> Date: 2003/01/09 Thu PM 09:54:42 EST
> To: [email protected]
> Subject: Re: [TheForge] treadle hammer anvils
> 
> I agree, the answer depends on how the hammer is used. Also, if the 
> hammer is screwed down to a large concrete foundation, that should help.
> 
> I don't think filling the tube with loose scrap concrete, sand, etc. 
> will help. I think the fill would have to be firmly attached to the 
> hammer. Just my opinion, no facts to back it up. Maybe you could fill 
> the base with sand and put some kind of hold down on top of it to 
> compress it. I also like Bruce's and Mike's idea of bolt on mass.
> 
> I suspect most of the pre-made hammers use a hollow anvil so that 1. 
> they cost less to make and 2. they cost less shipping.
> 
> Both of the hammers I've made were solid anvil.
> 
> Steve Smith
> 
> GHS wrote:
> > bob, The "solid "configuration that you
> > used on mine is good and solid. That
> > being said, for the most part I do not
> > hit hard enough to really utilize it,
> > most of the time.. I use it as a striker
> > when I am holding tooling. So for me the
> > tube probably would have been fine. 
> > If he is not likely to be stomping as
> > hard as he can most of the time a tube
> > will still make a sufficient immovable
> > object. It might be a bit noisier
> > though.
> > 
> > Mike Graf
> > 
> > [email protected] wrote:
> > 
> >>i am building a treadle hammer for a friend. he is not sure whether to go with a solid anvil or a tube type. it seems that most commercially available t hammers have tube anvils with a plate on top, centaur, kirkpatric (the same?) and the one advertised in the hammers blow.
> >>
> >>are there others that can be bought?
> >>
> >>any opinions on the functional difference between solid or tube anvils? the guy i am making it for is concerned about moving it (weight). he lives in a flood plain and his shop has 7' of water in it some springs. he usaully loads thing up and moves it to high ground till the water goes down.
> >>
> >>bob s.
> >>
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> > 
> 
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