Power level has very little effect to cutting depth

[mcdanlj (Michael K Johnson)]

@cprezzi

Be aware that the potentiometer % values are completely off! Most machines reach the maximum recommended tube current (15-18mA) at max. 40-50% setting. If use use it with more power, the tube will degrade very quickly.

I integrated this point, expanded to show how to calculate it for other devices, into New to K40: Start Here - Getting Started with CO2 Lasers - Maker Forums