I was an engineer at a laser manufacture once upon a time. I wouldn't use anything under 30W for this hobby, for many of the reasons you listed (Our biggest combined two 75W lasers for 150W total.). One of my co-workers was into table top war games, and made many things on his spare time for it using Masonite, plastic, and balsa wood. That included control panels with markings. It was pretty amazing once he had it assembled and painted. I want to do wood decks for my box cars and flat cars, and to make buildings, but I never got around to it before I left. I wish there were more options for low cost easy to use higher power hobby lasers.
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