Is 1" to thin

[JTknives]

im going to be finishing my forced air forge and going to be using kast-o-lite 30. the tank im using is 16" long and 8" in Diamater. if i do a 6" chamber i onley need 18 pounds but that gives me a 1" thick wall. if i do a 4" chamber i need 31 pounds and i have 2" thick walls but longer time to come up to temp. could i get away with 1" thick walls? any ideas

 

[Stacy E. Apelt - Bladesmith]

In a poured refractory, you can use a thinner wall. 1" should do fine for a small forge like that. If you have any questions just ask Darren Ellis. He's the man when it comes to refractory products and information.
Stacy

 

[JTknives]

its just so exspensize to ship so if i could get away with 20 pounds that would be sweet.

 

[JTknives]

ya i have him on speed dile

 

[A C Richards]

Darrins link http://www.elliscustomknifeworks.com/

 

[Will Leavitt]

1" should be good on castable refractory, I'm only running 1 1/2" of kaowool with Satanite over it.

 

[Stacy E. Apelt - Bladesmith]

Shipping from Darren is done in flat rate boxes. Shipping is usually cheap.
Stacy

 

[JTknives]

should i do itc-100 and bubble alumina.

 

[A C Richards]

If you do a castable the ITC is really not necessary at least IMHO. I tried it on a castable forge and could not notice an increase in efficiency. If it was a wool liner then the ITC would protect the Inswool and increase upper range from 2300-2500aprox.

 

[insanity]

itc-100 will increase the efficiency of the forge and bubble alumina will go a long way in protecting your forge from flux. I say coat the whole thing in itc and put alumina on the bottom where the flux will gather.

WS

 

[JTknives]

i thought castable "kast-o-lite" was very resistant to flux.