Fortunately, for many projects, the two main substitutes—medium-density fiberboard (MDF) and plywood—are less expensive, yet perform just as well or better than solid wood for a wide range of projects, including furniture, cabinets, shelves, and decorative accents such as wainscoting. Still, choosing the right material—MDF vs. plywood—for your project can be a puzzle.http://www.pxmaterials.com/mdf/