MDF, short for Medium Density Fiberboard, is a wood product made by combining wood fibres with wax and a resin binding agent. Once the wood fibres and glue are mixed, they're pressed into flat panels using high temperatures and pressure. MDF is available in both sheet and panel form, and it can be cut and shaped to meet the needs of any project.
Similarly to plywood and particleboard, you'll be able to find large sheets and panels of MDF at varying different thicknesses. For instance, the Medite Premier MDF - the standard MDF type available at C Workshop - ranges between 3mm and 38mm. You'll also be able to find medium-density fiberboard with different qualities, such as the Medite Flame Retardant MDF, which has been specially treated to be able to suppress fires.
MDF is viewed to be a more affordable wood product. Many producers have started replacing their plywood with MDF. However, its affordability is a big part of why another reason is that MDF boards are much easier to paint on as they have a smooth surface. Just seal the MDF material with PVA glue or an oil-based primer beforehand. It's also easier to use and more flexible than other wood types.
Due to its different qualities, medium density fiberboard is used for various other purposes. Here's our list of some of its most common applications.