Design Nomenclature / Physical Model Making
MDF
Also called medium-density fibreboard, medium density fiberboard, fibreboard
Wood fibre and resin pressed into a homogeneous panel with no grain and no voids, which is why it machines to a crisp edge in any direction. The default for patterns, jigs and vacuum-forming bucks. The cut edge drinks paint, the dust is genuinely hazardous, and it swells irreversibly the first time it gets wet.