Hello all. Attempting first RMH build. Building the system out of brick. Due to material limitations some parts will be made of firebrick and some with concrete blocks. I'm wondering where the hottest points in an RMH would be so I make sure to use firebrick there. Thanks!
Lowest part of the feed tube and the first half of the burn tunnel are the hottest, according to my thermometer. The spot where bricks fails relatively quick is the first brick bridging the tunnel.
