The enclosed mini portable fiber laser marking machine is the most welcomed fiber laser engraver by industries with requirements of security for its enclosed safety door. Due to the fiber laser source, the laser marking machine is suitable for metal, like stainless steel, aluminum, copper, and especially jewellery. Recycling of laser marking on gold, silver and platinum can be achieved in such enclosed environment. Rotary attachment is optional for ring, bracelet, and other jewellry in circle, which ensures the jewellery laser marking machine work appropriately. The machine’s portable design makes it in a mini cabinet and saves room more, suits for where space constraints. High readability and reliability enable the machine suitable for marking small metallic and plastic components.