Graphics should be made according to the colors of the materials. The same graphic will be engraved into two different effects on white and black double color templates. 50mm focusing lens are usually used for engraving and the resolution is usually set to 350-500 dpi, the speed 2-20 meters per minute and optical density 20-30%. The power of air pump will influence the degree of burning. The stronger the air blow, the poorer the engraving effect will be. It’s better to avoid air blow and take away the air ejector (the engraving will block the gas nipple if it’s not working. The cutting of double color template will have the phenomena of edge fusion and blacking edge which need to be shaved with knife). The speed is 1 meter per minute and optical density 50-60%. Sometimes film can be laid on it for cutting and remove it after cutting, then the surface of the edge will be better.