Repair and rebuild linings of cupolas.
What does a Cupola Patcher do?
Repairs and rebuilds lining of cupola: Mixes sand, clay, and other refractory materials and applies mixture, using trowels and other handtools, to burned areas in brick lining of cupola. Tears out badly burned brick linings and relines cupola with new firebrick, using bricklayer’s tools. Closes and props drop-doors of cupola and lines furnace bottom with sand. Builds and repairs clay troughs through which metal runs from taphole to ladle. May use air chisel to remove burned brick.