If you can think it, we can print it! We print on virtually anything you can think of. Some of the more popular rigid materials we print on are: Foamcore : In both White & Black at 3/16" and 1/2" thick. Gatorboard : In both White & Black at 3/16" and 1/2" thick. Coroplast : 4mm or 10mm. Aluminum Sandwich Board: 1/8" thick ; aka as aluminum sign panels. 0.040 Aluminum Signs. 30mil Car Magnets. 1/4" Clear Acrylic. 24pt, 54pt SBS Board. 1/8" Sintra or PVC Board. 0.020 and 0.030 Styrene.