[TheForge] Fw: Anvil repair

[Jason Nass]

While we are on the topic of anvil repair, what is the best way to address
chipping along the edges, I recently picked up a 1860-1900 era Peter Wright
157# at a good price, $1.50/lb. and it has a little chipping along both
edges, not so severe as to be unworkable, but a little in the way sometimes.
I am torn between taking a little off the face, (which I will probably do
anyway because it has a tiny bit of sway),  or just making the rounds on the
shoulders a little larger so that the chips disappear into the shoulders.
Any reliable ways to build up the shoulders without completely trashing the
heat treat? I've seen the process, and while I am confident I could pull it
off, I really don't want to anneal it, mill it and then re-harden it if I
can avoid it. 

Jason Nass - MacTalis Ironworks
me at wargoth.com


-----Original Message-----
From: theforge-bounces at mailman.qth.net
[mailto:theforge-bounces at mailman.qth.net] On Behalf Of Bruce Freeman
Sent: Saturday, October 16, 2010 1:38 PM
To: Blacksmithing List Sponsored by ABANA
Subject: Re: [TheForge] Fw: Anvil repair

Mike--

That's absolutely correct, and Josh (who may be lurking here) has the
Fisher-Norris patterns to prove it.

Fisher-Norris had a special mold form for sand casting anvils.  It looked
just like the anvil, but had an extra lump on the top.  The sand mold was
made around the pattern, the pattern removed, and the surface plate - plus
an extra cast steel plate for the top of the horn
- was inserted.  This left an anvil-shaped void below the plates, and
another void above it.

The mold was filled inverted, so the void "above" the plate filled first and
pre-heated the plate to red heat.  The rest of the mold was then filled and
the whole allowed to cool.  The chunk of cast iron on top of the anvil had
not adhered, and was easily knocked off.  But the pre-heating allowed the
rest of the anvil adhere to the plates (which is Fisher's discovery) and a
solid anvil resulted.

On Sat, Oct 16, 2010 at 11:17 AM, CGRAF <adveniam at att.net> wrote:
> I seem to remember ( and Seeming to remember is happening more and 
> more) that some of the tool steel tops were welded to the base of cast 
> anvils by placing the heated steel plate in the mold and pouring the cast
over it.
>
> It might work, but I cannot find any corroborating documents in my 
> piles of crap.
>
> At any rate it sounds less nasty than trying to forge weld a 3/4 inch 
> plate onto a base.
>
> Am I remembering something real or just a dream?
>
> Mike Graf
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--
Bruce
NJ
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