[TheForge] Strengthening castable refractory

Sun Aug 31 08:31:01 2003

Hi Chuck,

Be sure to let us know how it goes.  I for one am always interested in what
people are doing with forges.

Ed

----- Original Message -----
From: "Chuck Robinson" <[email protected]>
To: <[email protected]>
Sent: Saturday, August 30, 2003 1:06 PM
Subject: Re: [TheForge] Strengthening castable refractory

> Hey Ed,
> This will be the first time for me to use the needles.
> I usually use my technique of anchoring the inswool or hard castable with
> sheet metal screws screwed thru the metal forge skin.
> I'm in the process of building a replacement forge to heat treat my
> bladesmithing anvils and want to try a 2 layer refractory. outside layer
> inswool  and inner wall Mizzou 3000.
> I plan to make the inner wall about 1" to 1 1/2"s thick so I'll need th
> needles to strengthen it'.
> The outer wall will be held in place with the screws.
> On the forges where I have rebuilt the inswool liners, even the carbon
steel
> screws last for a few years.
> The fact that they are coated with satenite and don't extend thru the
> inswool limits the amount of heat and air they are exposed to . Since the
> needles are stainless and imbedded in the castable they shouldn't
> deteriorate.
> Chuck
> Chuck
>
>  ----- Original Message -----
> From: "Ed F" <[email protected]>
> To: <[email protected]>
> Sent: Friday, August 29, 2003 10:21 PM
> Subject: Re: [TheForge] Strengthening castable refractory
>
>
> > Hi Chuck,
> >
> > Have you ever broken a used forge, by chance, and seen if the ss needles
> > survive repeated heat?  Maybe if they do burn out they still help avoid
> > shrinkage cracks during curing.  I seem to remember that it would have
> been
> > in the ballpark of $50 and I was kind of directed away from it at the
> time.
> >
> > Ed
> >
> >
> >
>
>
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