Oh okay,… I didn’t realize that the “!” it was actually “1”.
My 5W laser (LT - Laser Tree maybe) has a focal length (DOF) of 20mm. But as it has integrated protection, and it is 18mm high, I only have a margin of 2mm between the material and the protection. Which somewhat limits cuts in thicker materials.
Do you know the focal length of a 10W laser (on average, of course)?
Maybe I can help a bit, as far 10W optical I know focal lenght is +/- 40-50mm.
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Thanks @robocze321
That’s the double (or plus) of focal length. In some cases it makes a huge difference. 
But maybe it weighs almost twice as much, don’t you think? 