|A Talman TC620 with a resoncast body|
Resoncast is a type of wood-based material which has been used in the construction of bodies for electric guitars and basses. It was used by Ibanez for a variety of RG, RX and Talman series guitars produced in the late 1990s. The name of the material is sometimes represented as Reson-Cast
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.
Guitar bodies made out of resoncast tend to be heavier in comparison to bodies made out of common wood.
Luthite is another synthetic material that has been used in a similar manner.