So here’s my question, I’m shooting for a 10” bore, and a 1” cast hot face. That leaves me barely under 2” for wool. Would really packing it there say 3” of wool in a 2” space lower heat transmission to the steel can or would it reduce its effectiveness? Does ceramic blanket work like fiberglass where the air between the fibers is the insulator? Or is the ceramic itself? thanks in advance -M@
It will provide more support but slightly reduce the level of insulation. You can buy it in 4, 6, & 8lb/ft3 densities with the latter two being the most common. Here's a link that will shows the relationship between density and thermal conductivity. They are all great insulators. https://ceramicfiber.com/ceramic-fiber-blanket/ I've always used 8lbs/ft3. My 1" thickness role expands to 1 1/4" - 1 1/2" then needs some recompression to install at 1" thickness, but can provide some mechanical support when so. Best, Kelly
