Gantry laser system for welding plastics and for marking and engraving tasks. The large, convenient vertical glass sliding door enables loading of workpieces up to 1000 kg. Five dynamic axes and a vibration-free granite plate enable most accurate processing at very high speed. A maximum flexibility is guaranteed by an axis of rotation and a rotary table. The design of the unit embodies aesthetics of a modern machine tool. The combination of angular sheet metal profiles and deep-drawn parts reflects precision and dynamics of the unit. The ergonomic operation is guaranteed by a stepless adjustable terminal.