mitme lahutuspinnaga lahtivõetav valumudel; kasutusel keerukate valandite tootmisel, mis ei võimalda tervik- või poolitatavate mudelite kasutamist (vrd tervikmudel, poolitatav mudel), a pattern in which separate pieces are joined to a primary pattern segment by beveled grooves or pins; used when the geometry of the product is such as a one-piece or two-piece pattern could not be removed from the molding sand (compare: one-piece pattern, split pattern)