Mount board is traditionally used for dry mounting of artwork for framing but many of these boards are used for signage or model making. Chipboard is used by architects for building models. Coroplast, also known as Plasticor, is a corrugated plastic used for outdoor signs. Project display boards are used by students for science fairs, etc. Black mount board by Letramax & Crescent is used by photographers or is also used by illustrators who prefer a black surface.