Flask (metal casting)
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A flask is a type of tooling used to contain a mold in metal casting. A flask has only sides, and no top or bottom, and forms a frame around the mold, which is typically made of molding sand. The shap
Round flasks
Cope and drag
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In foundry work, the terms cope and drag refer respectively to the top and bottom parts of a two-part casting flask, used in sand casting. The flask is a wood or metal frame, which contains the moldin
Flask (metal casting)
…is larger than the pattern being used to make the sand mold. Flasks are commonly made of steel, aluminum or even wood. A simple flask has two parts: the cope and the drag. More elaborate flasks may have three or even four parts. Flasks are often designed with bars that extend to span two opposite sides. The bars act as…
Cope and drag with cores in place on the drag
Two sets of castings (bronze and aluminum) from the above sand mold