Can not engraving material:metal, stone, ceramic, shell, light-reflecting material, transparent material Cutting Material It can only cut foam, paper, thin leather material. In the process of using, please wear professional protective glasses! Suggested that the laser light in the case of focus, the power is too strong, do not use strong light to illuminate the skin! International buyers please note: a. The item "40X50CM 500MW DIY Laser Engraving Machine CNC Desktop Wood Logo Cutter Engraver" is in sale since Friday, March 9, 2018.This item is in the category "Business, Office & Industrial\Printing & Graphic Arts\Sign-Making". The seller is "biwecity" and is located in HK. This item can be shipped worldwide.