As I begin to understand how lenses really work in our laser machines many other puzzling issues seem to be resolving.
This understanding of lenses has highlighted just how vital it is to have almost perfect Gaussian beam intensity for successful cutting.
It is an accepted "fact" that more watts= deeper and /or faster cutting. I now find this incorrect on both counts. Deeper cutting is a factor associated with lens choice and faster cutting is dependent upon light INTENSITY. More watts= more light intensity but the efficiency of that energy transfer depends on the QUALITY of beam your tube can generate, The best beam quality you can ever achieve is a Gaussian intensity distribution. How good is yours????
A rarely considered factor that affects ALL machines is beam DIVERGENCE. The bigger your machine the more this factor will impact your cutting performance. I am sure machine builders don't even understand this when they sell you a big machine. Users will be shocked when they see this video and test their own machines.

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