Expanded polysterene foam (EPS) low cost foam commonly referred to as white foam. Available in different 3/4lb low density and 2lb high density. Easy to cut with sharp utility knife or serrated blade. Precision cutting with hot wire cutter. Use as lettering, diorama, backdrop, cosplay designs and crafts.
Adhere with Multifilla’s modelling glue that will not dissolve foam. Pasty and fast drying too. To strengthen or have impact resistance, brush coat with Epsilon coating from Smooth-On USA, fine sand and thereafter aerosol spray paint without problem for a smooth finish. Similarly white gesso 2 coats or more if you need to aerosol paint.