20W/40W Laser modules: new PCB engraving method?

Have tested now with the 40W - no good for PCB (see 2W laser first test: PCB does work (with restrictions & slow...)! - #47 by Hauke) unfortunately. So with the 2W I guess you can get there - I may over the holidays try a few more things with that one - but it will be painfully slow. I assume that I’ll park this until perhaps at some point there’s a 10W IR laser module or so…