[TheForge] Fw: Anvil repair

[Bruce Freeman]

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
> ______________________________________________________________
> TheForge mailing list
> Home: http://mailman.qth.net/mailman/listinfo/theforge
> Help: http://mailman.qth.net/mmfaq.htm
> Post: mailto:TheForge at mailman.qth.net
>
> TheForge mail list group photo site is
> http://www.photoaccess.com
> Login: blacksmithblacksmith at hotmail.com
> Password: anvil
>
> This list hosted by: http://www.qsl.net
> Please help support this email list: http://www.qsl.net/donate.html
>



-- 
Bruce
NJ