【Top Engraving and Cutting Capacity】The laser module of Laser B1 20w consists of four 6000mW lasers Diode Lasers, providing cutting capabilities comparable to an industrial CNC cutting machine. It can Cutting 12mm plywood, 15mm pine wood, 8mm acrylic at once, capable of multiple cuts of 25mm wood, 35mm acrylic board, and 0.05mm stainless steel board. With a B1 20w Laser Cutter Machine with Auto Air Assist, you can experience the power of enhanced cutting ability, making it the creative ideal choice for your needs..laser class ii 【Larger Engraving Area】The Laser B1 20W has a working area of 17.72 x 17.32 inches, which is 23.75% larger compared to other home engraving machines with same output power available on the market. This laser engraving and cutting machine offers a larger size than traditional models, allowing you to fulfill a wider range of engraving and cutting needs. Has better performance in both small businesses and household use. [Eight Safety Protection】Safety Lock: Restrict children from using the engraver; Laser Module Panoramic Filter Glass: Block blue light and filter 97% UV to protect eyes; Position Movement Protection: Stop the machine if it moves or tilts during operation; Flame Detector: Prevent wood burning for worry-free engraving; 2-Way Limit Switch: Alarm-triggered auto zero for laser head protection; Emergency Stop Button: Stop the machine for safety in accidents; Offline Protection; Thermal Protection. 【Durable Material and Fast Heat Dissipation:】The honeycomb panel is made of steel, making it more stable, durable, and rust-proof. The flat and smooth honeycomb hole design accelerates the emission of smoke so that materials such as wood are not easily blackened by smoke, and the engraving effect is better. 【Safety Protection】 In laser cutting operation, Longer honeycomb plate is used to prevent laser reflections from damaging the laser head during the cutting process and prolong the service life of the laser. The honeycomb workbench set is equipped with an aluminum panel, which can protect your desk from laser damage. Longer B1 20W Laser Engraver, 24000mW Output Laser Cutter Machine with Auto Air Assist,440 * 440mm Honeycomb Working Table, DIY Laser Engraver for Wood and Metal,Engraving Speed of 36000 mm/min