Do not use the laser head to point at human or livestock, do not use laser to point at peoples eyes. Skin exposure to laser is strictly prohibited. The caving machine should not be stopped while workingit will cause a damage. This product not suitable for kids under age of 14. Do not fall or make any collision to the product.Metal, glass, crystal and transparent or translucent stuff are can not be engraved. The color of the item may vary slightly due to photography and different PC monitor, and the size might be slightly errored due to manual measurement. Your kindly understanding would be appreciated. You might need to temporarily shut down the antivirus software before downloading the software. Otherwise some files in the software would be mistaken for virus and deleted by antivirus software. Please according to the user manual to operate the machine. After 20 minutes of working, it need to take a break, can not work continuously for a long time. Insert the USB disk Step 2: Install the driver. Exe" Step 3: Must Copy the "English zip to Computer desktop and then unzip it. Step 4: Connect the engraver to computer Step 5: Open the scarve-en. The item "3000mW USB Laser Engraver Carver DIY Logo Mark Printer Cutter Engraving Machine" is in sale since Thursday, February 27, 2020. This item is in the category "Business & Industrial\Printing & Graphic Arts\Screen & Specialty Printing\Engraving". The seller is "anglestore" and is located in Altadena, California. This item can be shipped to United States, Canada.