Current
Current is spoken of in the foundry in its relation to the flow of metal as it leaves the furnace, or as it flows from the ladle into the mould. It is also applied to the forced stream of molten metal as it issues from the gates and flows over the mould's surface. The current of metal, like all other fluids, is strongest at its source--for which reason there is always the greatest danger of abrasion nearest to the gates or runners; hence special attention should be expended to make such parts of a mould more rigid and refractory than is necessary elsewhere. See GATES; RUNNER; CUTTING; SCABBING.