I love the gold foil engraving technique applied to hard surfaces like wood or acrylic. It's rare to find self-adhesive vinyl made of laser-compatible materials because commercially available materials often contain PVC, which is a health risk, or the material composition isn't specified. Xtool is a guarantee and declares that its materials are compatible with CO2 laser engraving and cutting. At this point, I didn't give it five stars only because I wish there were more colors to choose from and more formats available, such as the classic 12-inch!
