Hey Ron, MDF, medium density fiberboard, is not good for chip carving. MDF is basically wood particles glued together. It’s crumbly and does not leave a good surface when cut/carved. I’ve heard from some who have tried carving it, but I’ve not tried it myself. If someone has and experienced different results than I described, i’d be interested to hear about it.
EZboard is high-density urethane (HDU) and nothing like MDF. EZboard has uniform density, is softer than basswood, carves beautifully, holds detail and takes any type of finish. HDU has been a sign makers material for many years. I can send you a sample if you like. Just let me know.