Abstract: A pouring conveyor in the form of a continuous loop receives sand molds on pallets or other mold carriers and conveys the empty molds to a pouring station wherein molten material is deposited therein to form castings. Each mold is provided with a supportive weight and jacket before pouring. Thereafter, the molds with the weight and jacket surrounding them, pass through a primary cooling line, at the end of which molds and weight and jacket are separated in a jacket transfer station. The weighted jacket is removed and transferred to an on-coming freshly made mold while the castings pass through a secondary cooling zone for further cooling and subsequently discharged said conveyor. The process allows for a substantially smaller number of weight jacket combinations and floor space than previously known molding processes.