Make clay cores around which ferrous and nonferrous pipe is cast.
What does a Pipe Coremaker do?
Makes clay cores around which ferrous and nonferrous pipe is cast: Clamps rod in bench vises so that it can be rotated. Wraps rod with paper, straw, or jute, tying it firmly in place with twine. Mixes mud, sand, and loam to form clay. Spreads clay over wrapping, adding molasses to make mixture cohesive and working coating by hand so that it is smooth and even. Spreads core blacking over core and places it in drying oven for specified time. Removes dried core and applies second coating to bring core to specified diameter. Spreads blacking on core and returns it to oven for final drying.