ÃÂÃÂ (Glass Cutter Matt) This cutting mat measures 227 x 151mm with 1cm squares and is ideal for smooth curves using minimal force. ÃÂÃÂ Precautions for use Although it is made of tempered glass,ÃÂÃÂ be delicate with your tools to avoid unessescary damage. Your blades may dull quicker when cutting on this surface. Since the surface is slippery, objects to be cut may slide and move. Secure items with tape.