[TheForge] Air Hammer Base Plate

[Steve Smith]

An anvil I built for an air hammer consisted of about 30" of 6" 
diameter, 7/8" wall pipe (lucky find), mounted on two thicknesses of 
1.25" thick x 20" diameter waterjet shop drops. Knowing a waterjet owner 
can have serious advantages for a blacksmith, they even usually know 
what kind of steel the drop is.

Steve

Phil wrote:

> Dave, I took your advice and increased the width of
> the 1.25" plate until it weighed the same as the 1.5"
> plate.
> 
> I was pretty lucky on another thing as well, I found a
> piece of 7" round hot rolled for the anvil.
> 
> --- Dave Mudge <dave at magichammer.net> wrote:
> 
> 
>>The more weight, the better.
>>Maybe the correct phrase would be 
>>The more mass, the better.
>>
>>Pick up a hefty 3 or 4 pound hammer and start
>>whacking on a 45 pound anvil.
>>Now, using the same hammer and the same force,
>>attack a 300 pound anvil.
>>
>>"real" hammer manufacturers use a range of 10:1 all
>>the way to 20:1
>>for the ratio between anvil weight and hammer head
>>weight. 
>>You can make the base plate a lot bigger than the
>>plans call for, just don't
>>go smaller.
>>
>>dave mudge
>>dave at magichammer.net
>>http://www.magichammer.net
>>http://www.metalsmithinghowto.com
>> 
>>-----Original Message-----
>>From: theforge-bounces at mailman.qth.net
>>[mailto:theforge-bounces at mailman.qth.net] On Behalf
>>Of Phil
>>Sent: Friday, June 10, 2005 5:49 AM
>>To: Sponsored by ABANA
>>Subject: RE: [TheForge] Air Hammer Base Plate
>>
>>I calculated the weight difference between the 1.25"
>>and the 1.5" plate for 16" X 41", and it's only 47
>>pounds.  Is that enough of a difference in the base
>>plate to matter?
>>
>>--- Dave Mudge <dave at magichammer.net> wrote:
>>
>>
>>>Figure out how much 1-1/4 plate x the length of
>>
>>the
>>
>>>plate called for in the
>>>plans, and have your 1-1/4 inch plate made that
>>
>>much
>>
>>>wider.
>>>
>>>dave mudge
>>>dave at magichammer.net
>>>http://www.magichammer.net
>>>http://www.metalsmithinghowto.com
>>> 
>>>
>>>-----Original Message-----
>>>From: theforge-bounces at mailman.qth.net
>>>[mailto:theforge-bounces at mailman.qth.net] On
>>
>>Behalf
>>
>>>Of Phil
>>>Sent: Thursday, June 09, 2005 4:10 PM
>>>To: Sponsored by ABANA
>>>Subject: [TheForge] Air Hammer Base Plate
>>>
>>>I'm builing the standard size Kinyon, from the
>>
>>ABANA
>>
>>>plans.  The place I get my steel from doesn't have
>>>1.5" plate for the base plate.  They do have 1.25"
>>>plate.  
>>>Would that be thick enough?
>>>
>>>
>>>		
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>>>
>>
>>
>>
>>		
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>>
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>>
>>
> 
> 
> 
> 
> 		
> __________________________________ 
> Discover Yahoo! 
> Use Yahoo! to plan a weekend, have fun online and more. Check it out! 
> http://discover.yahoo.com/
> _______________________________________________
> Manage membership or unsubscribe at:
> http://mailman.qth.net/mailman/listinfo/theforge
> theforge mail list group photo site is
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> 
>