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A high‑quality laser cut on carbon steel exhibits no dross (bottom edge clean), fine perpendicular striations that are evenly spaced, no discoloration beyond a thin heat‑affected zone, and a straight cut face with taper ≤1°. Read More

You cut 2 mm 304 stainless steel with nitrogen at 12 bar. The edge is bright silver. You switch to a new nitrogen cylinder – the cut turns blue. The supplier insists the purity is 99.995%. You check the nozzle: it has a slight spatter deposit. You clean the nozzle, and the cut returns to silver. The problem was not the gas purity; it was the nozzle disrupting the gas jet, allowing air to mix with the nitrogen. Read More

The cooling system is the lifeblood of a fiber laser. The laser source (especially the pump diodes) generates heat that must be removed continuously. A clogged filter or degraded water reduces cooling efficiency, leading to thermal shutdown, permanent power loss, or catastrophic diode failure. Read More