Heartwood Wood Effect Coffins.’ A range of entry cost-effective wood effect coffins. Made using MDF or chipboard laminated with paper printed in a variety of wood effects. The coffins are constructed and polished to a high standard but cannot be hand finished like a vaneer coffin. This means joints and nail holes cannot be sanded. The moulds are made with MDF wrapped in a selected paper wood effect wrap to compliment the coffin. They do not match exactly. The coffin base is made from chipboard, or in the case of a larger outsize coffin above 26 inches wide, the base is made from plywood.