I have an insulating firebrick (soft brick) arch that I put on my wood fired pottery kiln that is shedding chunks and needs to be replaced. I'll put in a hard brick roof next, with a modification I've never seen before.
Arch form in place: I have pegs that I bang in between the supports (2x4s) and the arch form to lift the brick arch up for removal.
The arch supports. Notice the glass of melted wood ash and soda. Sodium from soda ash forms sodium silicate when it hits the bricks.
The arch 1/2 removed.
I've had a mouse come out when I fired- here's the nest it had in the insulation. Has it been eating clay? The turds appeared bisque fired. (it gets HOT up there!)
Arch form in place: I have pegs that I bang in between the supports (2x4s) and the arch form to lift the brick arch up for removal.
The arch supports. Notice the glass of melted wood ash and soda. Sodium from soda ash forms sodium silicate when it hits the bricks.
The arch 1/2 removed.
I've had a mouse come out when I fired- here's the nest it had in the insulation. Has it been eating clay? The turds appeared bisque fired. (it gets HOT up there!)