Not sure if this is the right place to post this kind of information so please move if needed. I came across some High Temperature Kiln Brick on Craigslist in Helena, MT. It's probably too big of brick for a normal riser build but figured it might be useful for someone's mad science RMH design
Magnesia chrome bricks are great for mass, very heavy and virtually indestructable. Not good in places where you need heat quickly, they tend to gobble up lots of heat. So, not for the riser or firebox or whatever.
Oh sure, it's a tiny ad, but under the right circumstances, it gets bigger.
poor man's poll: would you support a kickstarter for a SKIP book?