Resoncast is basically just a marketing term to describe medium-density fibreboard, which is commonly known as MDF. MDF consists of wood fiber, resin glue and paraffin wax which are formed into panels under high temperature and pressure. The MDF which Ibanez used consisted primarily of alder sawdust. The stated reason for employing resoncast was to emulate the tone of the old composite Danelectro guitars, but a key benefit is that it kept production costs down at a time when the Japanese yen was strong compared to other currencies.