This machine is a full set of parts, assembly required, if you need the instructions you can contact us after the purchase and we send them to you. Note: In order to avoid burning the circuit board, we will unplug the X, Y axis before shipment two lines. Pro-received in accordance with the instructions can be inserted after the wiring. This laser engraving machine cannot engrave the following materials: Metals (whether thick or thin), stones, ceramics, jewels, reflective materials, colorless transparent materials, soft materials. This laser engraving machine can engrave the following materials: Wood, plastic, paper, bamboo, horns, leather (purse), plastic phone case, rubber stamp, photosensitive seal, sponge paper, etc. Engraving materials: Wood, plastics, paper, bamboo, horns, and some co