The gating system is part of the pattern, and eliminates hand-cutting the gates. Small quantities of castings result with this type of patterns. The gate is the channel or channels in a sand mold through which the molten metal enters the cavity left by the pattern. This channel can be made in two ways, one by cutting the channel or channels with a gate cutter, or by the pattern having a projection attached tothe pattern which will form this gate or gates during the process of ramming up the mold. If a pattern is made for a gate but not attached to a pattern but only placed against it while making the mold, this pattern is called a set gate pattern.