Slip Mixers are specifically designed for mixing clay slip from dry powder and reclaiming scrap clay. They do not include pumps for pouring molds. Slip Pumps are designed to agitate and condition the slip and pump it into molds. The RM30 (only) is reversible and can draw the slip back out of the mold. They are not designed to mix slip from dry powder or reclaim scrap. See 'Slip Mixers' for this application.