Can not engraving material:metal, stone, ceramic, shell, light-reflecting material, transparent 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!Avoid the use of flammable objects or gases in order to avoid causing a fire or explosion! Don't update the firmware. 1x DIY Desktop Mini Laser Cutting/Engraving Machine 1x Laser goggles. The item "USA 3000MW 65x50cm Laser Engraving Cutting Machine Engraver Printer Desktop Kit" is in sale since Thursday, April 29, 2021. This item is in the category "Business & Industrial\Printing & Graphic Arts\Screen & Specialty Printing\Engraving". The seller is "best2service" and is located in Alloway, New Jersey. This item can be shipped to United States, Canada, Mexico.