... 4.FDA,CE Double Heads Laser Cutting Engraving Machine CM1490Q1:what kind of materials does the machine can cutting or engraving ... ,marble,ceramic,etc,mainly used in large materials cutting.Q2: what work table should I use, honeycomb table or aluminum bar ... bar table is suitable for plastic,acrylic, wood, mdf Q3: what kind of laser power should I choose? thanks A: This ...