Corrugated plastic, also known as Coroplast. It can be easier to source than acrylic sheets, and is certainly much easier to work with. Any sign shop or plastics supplier likely has it on hand in ...

All signees know Corflute ® - which is actually a trade mark of Corex Plastics Australia. The generic term might be 'fluted board' or 'corrugated plastic sheet' and it is known as Coroplast in the USA ...