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This shows some interesting techniques for repairing firebrick in front-loading kilns where it is difficult to replace an entire firebrick section.

This video shows how to repair minor cracks in the bricks on a front-loading Easy-Load kiln. Can also be used in other situations where you do not want to remove firebrick. Hi-Temp kiln cement can be used instead of phosphate bonded cement (which is no longer available).

How to repair cracked brick in a front-loading kiln. First remove the damaged brick using a drill and chisel to route out and remove brick. Then shape a cut firebrick piece to fit in the space and cement in place. Then sand. Let the cement dry overnight and then do a slow bisque firing to cone 5. This same technique can be used on kiln bottoms and in other situations like on the side or back. Hi-Temp kiln cement can be used instead of phosphate bonded cement (which is no longer available).