I'm building a gas forge out of an old propane cylinder.
The cylinder is about 12" in diameter and I have cut 8" holes in each end. I would like to line the cylinder with 2" of Kaowool, painted with ITC-100 and then put in an 8" wide section of 1" thick kiln shelf. The shelf will stick out each end a bit.
Seattle Pottery Supply has 1" thick cerablanket in 4, 6, or 8 pounds per square foot. Which density is best for my application? The Anvilfire store sells the 6 lb stuff so that would be my default unless there is a compelling reason to go lighter or heavier. Any one care to chime in on which weight would be best?
Also, there are a variety of kiln shelf materials available. I'm looking for something that is durable and can withstand being blasted by a 3/4" T-Rex burner. Mullite, silicon carbide, and high alumina shelves are available. I have found references that high alumina would probably be suitable and that mullite would not be as good. Not sure about SiC. Can some one enlighten me as to the properties of each material?
Thanks for helping a neophyte out--I'll probably have more questions as this project progresses.
Cheers,
Jeff Dantzler Seattle, WA