[TheForge] Treadle Hammer Anvil

[Peter Fels & Phoebe Palmer]

Result is like a dead blow hammer, yes?...slower impact, little rebound.
Because it's desirable to have a near neutral hammer weight spring 
adjustment.... and because the lever arm to the springs is effectively 
shorter at the top and bottom of the stroke on most THs....the 
rebounding of the TH hammer head helps the spring back up through the 
bottom weak spot, and allows a quicker recovery for repeating strokes.

If you plan to cart the TH around from here to there, Use heavy wall tubing.
If you don't plan to move it, go for all the solid mass directly under 
the hammer possible.
When i first built mine, the anvil was a stack of 6, 1" plates, with 
hardy holes cut out of each ,to match my anvil's hardy .The top layer 
was scraper blade. I Veed the plate edges and welded the heck out of it.
I made the hammer head the same way.
That was an error, the plates should have been vertical.
I welded that atop a stout 6"X 9" I beam with a heavy bottom plate.
At a later date i lucked into a bunch of 5/8 to 1" steel slabs that i 
trimmed to to fill in the I beam. I burned lots and lots of old WW2 
welding rod to weld it up nearly solid.
The added anvil mass improved the effectiveness of the hammer 
dramatically.....pf

Ben Barrett wrote:
> Oh, right -- but with a spring return on a TH wouldn't that actually
> get more [effective] work done?  Humm...
> ...not like the rebound is saving your shoulder the work :)
> Or is it that return vibration within the material, re-hammering the
> underside of the piece we'd be missing?
> 
> ~ben
> 
> 
> On Mon, Jun 9, 2008 at 5:57 PM, Peter Fels & Phoebe Palmer
> <artgawk at thegrid.net> wrote:
>> mass without rebound?
>>
>> Ben Barrett wrote:
>>> Sounds nice -- I like it.  My thoughts:  have the bottom capped, stuff
>>> it full as you suggest and then pour molten lead into the spaces
>>> between all those pieces (prolly after pre-heating the whole thing),
>>> and cap the top with a nice solid mass to anchor your dies to :)  I
>>> keep hearing about such things, but as a younger guy I haven't seen
>>> it.  Lead is one of those things people advise simple avoidance on
>>> when possible, like the good advice I've gotten about galvi.  Lead
>>> would be a fun day project though, I think, if well-contained.
>>>
>>> ~ben
>>>
>>>
>>>
>>> On Mon, Jun 9, 2008 at 9:08 AM, <PlumDon at aol.com> wrote:
>>>> What about jamming all the 1/2" round and square  you could, longthwise,
>>>> into
>>>> a 6" pipe.
>>>>
>>>>
>>>>
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> _______________________________________________
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