If you already have wax patterns the route to go would be investment (lost wax) casting. The individual wax patterns would be fastended to a wax "tree" which is really the riser and runner system. The resulting assembly is dipped in a ceramic slurry and dried resulting in a ceramic shell. This is the actual mold. The wax is melted out and the ceramic shell is fired to about 1800-2000 deg F then the molten metal is poured into the shell.
Just about any steel brass ort aluminum alloy can be poured. The resulting casting is "near net shape" meaning very little or no machining is required. |