Medium density fiberboard, also known as MDF, is type of wood that is similar to particleboard. It is made out of wood waste fibers glued together with resin, heat, and pressure. Medium density fiberboard can be used for a variety of projects because of its characteristic it is smooth and uniform consistency. It also will not warp which makes it an ideal choice for cabinetry and molding projects. The MDF is often used in place of plank wood, particleboard or high density fiberboard because when sawed it produces a fine even edge. Because of how smooth the surface is, it takes well to painting and only needs a primer and two coats of paint to have an attractive finish unlike some other wood products that may require more sanding and additional coats of paint. Because it does not warp, it is also used quite a bit in bathrooms for cabinets or in other high humidity applications.

Home builders, cabinet makers and carpenters use medium density fiberboard for furniture, shelving, flooring, molding and doors. The wood is very versatile and can be used for a number of applications. It is used often for doors because it insulates sound and heat very well. Taken in conjunction with its smooth surface and ability to take paint well, it is an ideal material for doors. The wood is also very flexible in the type of treatments that it can take such as nailing, gluing, screwing or stapling. The only drawback to medium density fiberboard is the resin that is used to strengthen the wood. This resin contains formaldehyde so care should be taken when cutting it to reduce the amount of dust that is airborne. Try to reduce exposure to MDF whenever possible.

When medium density fiberboard is used for cabinets and other wood working projects, it is very often covered in a veneer or laminate of real wood to disguise the MDF, especially along edges that may be visible. MDF is also a great wood to use for those who are environmentally conscious. Because it is made from scraps and other waste products it is friendlier to the environment. Instead of these items going to a land fill they are recycled.