[TheForge] Strengthening castable refractory

[Steve Smith]

I ran into some castable in Colorado that had fiber reinforcing in it. 
Sorry but I don't have the manufacturer's name.

Steve Smith

Marc Godbout wrote:
> I'm building a new forge. This one will have an arched roof made out of
> insulating castable refractory. The insulation will be in a metal shell
> - a half-pipe. Is there anything I could, or even should, do to
> strengthen it? Chances are it will crack at some time in the future due
> to heat. Since it's arched, a crack straight through will probably not
> affect much. But multiple cracks at the wrong angle could let a chunk
> fall out.
> 
> I have a roll of stainless steel wire. Would using this as a sort of
> "rebar" make a difference? Any other thoughts?
> 
> Thanks.
>