Remove excess mortar with trowels and hand tools, and finish mortar joints with jointing tools, for a sealed, uniform appearance. Construct corners by fastening in plumb position a corner pole or building a corner pyramid of bricks, and filling in between the corners using a line from corner to corner to guide each course, or layer, of brick. Measure distance from reference points and mark guidelines to lay out work, using plumb bobs and levels. Break or cut bricks, tiles, or blocks to size, using trowel edge, hammer, or power saw. Interpret blueprints and drawings to determine specifications and to calculate the materials required. Fasten or fuse brick or other building material to structure with wire clamps, anchor holes, torch, or cement. Lay and align bricks, blocks, or tiles to build or repair structures or high temperature equipment, such as cupola, kilns, ovens, or furnaces. Mix specified amounts of sand, clay, dirt, or mortar powder with water to form refractory mixtures. Calculate angles and courses and determine vertical and horizontal alignment of courses. Clean working surface to remove scale, dust, soot, or chips of brick and mortar, using broom, wire brush, or scraper. Apply and smooth mortar or other mixture over work surface. Examine brickwork or structure to determine need for repair. Remove burned or damaged brick or mortar, using sledgehammer, crowbar, chipping gun, or chisel.