Silver Painted Cast Resin and composite Letters. Oasis letters sign project. The letters were made 15″ high in a Garamond Bold Font. The 3D letters were 20mm thick and had brass locators on the back for fixing to the shop sign by the customer. The customer wanted Garamond Bold. We had Garamond in our standard list for moulded letters but not Bold, so we offered the customer the letters in cast resin instead. Making letters in cast resin allowed us to produce the letters as requested.