Please refer to section 2.5 of your manual for a more comprehensive list and safety guidelines, but you can use a variety of materials including various plastics, wood, ceramics, glass, textiles, leather, rubber, and stone. Additionally, you can remove finish coatings (type I/II anodization, paint, powder coat) from metals to expose the bare metal below the finish coating, and you can mark on raw metals with a marking spray. You may find your CO2 laser manual in our Download Center or the product page of your laser.