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[sheetmetallasercutter]

Fiber lasers are able to achieve significantly smaller focus spot diameters (up to 300µm) compared to a CO2 laser (450-600µm). The smaller spot diameter means the striations formed during cutting are much closer together, giving the appearance of a rougher cut edge.
Although, the smaller spot diameter allows for more detailed profiles to be cut with higher precision at much higher cutting speeds.
The principal advantage of a fiber laser however is its electrical efficiency. CO2 lasers have an efficiency of approximately 10%, therefore to power a 6kW laser, a 60kW power supply is needed whereas, a fiber laser cutter is 45% efficient so only a 13kW supply is needed.
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