The base board that comes with the Tamiya track vehicle is like some sort of semi-hardwood, like beech, or alder. There is a piece 0.062 aluminum for the plate that holds the pcb, and Vex receiver. Then there is a cheapo phenolic pcb board that came from from a plastic project box. I hate that phenolic stuff, really brittle, super easy to lift pads when soldering. Hope that covers the boards?