Can not engraving material:metal, stone, ceramic, shell, light-reflecting material, transparent material. It can only cut foam, paper, thin leather material. 1In the process of using, please wear professional protective glasses 2Forbid children to play 3Suggested that the laser light in the case of focus, the power is too strong, do not use strong light to illuminate the skin 4Avoid the use of flammable objects or gases in order to avoid causing a fire or explosion. 1x DIY Desktop Mini Laser Cutting/Engraving Machine 1x Laser goggles. International buyers please note: a.The item "4050cm 2500MW 2.5W Laser Engraver Desktop Engraving Cutting Machine Printer Kit" is in sale since Tuesday, May 22, 2018. This item is in the category "Business & Industrial\Printing & Graphic Arts\Screen & Specialty Printing\Engraving". The seller is "mhestore2009" and is located in HK. This item can be shipped worldwide.