Medium-density fiberboard (MDF) is an engineered wood product made by breaking down hard or softwood residuals into wood fibers, combining it with wax and a resin binder, and forming it into panels by applying high temperature and pressure. MDF is generally denser than plywood and particleboard and is stronger than particleboard. MDF typically comes in a tan or brown shade, but other colors may be available through special order. MDF is great for painting and for laying up veneer or laminate.