[TheForge] Re: Strengthening castable refractory

Sat Aug 23 10:29:00 2003

Hey Norm,
I disagree about the outside liner just being necessary to act  as a mold to
 form the castable.
I always use metal with a wall thick enough to weld fittings to, such as
burner brackets , hinged doors, lifting eyes and legs or bottom supports.
I have also started using stainless shells for some customers.
On the first test firing any hot spots in the skin, discolor and show you
exactly where to beef up the insulation.
The straight sided SS beer kegs make good cheap shells for large forges.
Chuck

----- Original Message -----
From: <[email protected]>
To: <[email protected]>
Sent: Friday, August 22, 2003 11:17 PM
Subject: [TheForge] Re: Strengthening castable refractory

> I was going to experiment with mixing my own insulating castable
> refractory  more or less as an experiment.  However, I do believe
> that insulating refrac. is fairly more expensive than the regular.
>
> Also I was planning, but didn't do it, to have a hybrid arrangement
> with castable on the inside and a blanket on the outside.  I like the
> way Frosty was talking about doing it cuz the inside castable part
> doesn't really need an outside liner to it other than as a mold to
> form the castable.  Then the dried castable could be wrapped with
> insulating blanket to provide more insulation and perhaps have a
> shield around it for protection.
>
> Norm Larson
>
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