My production people plan to buy a Boss laser to blast artwork onto anodized boxes, to avoid buying polycarb labels. That works nicely:
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I sent some FR4 samples to Boss to see if they could blow away copper, LPKF-style. They can!
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Resolution is awesome. They scorched the FR4 a little, so those small isolated patches were 10 or 20 Mohms to the ground plane. A toothbrush and some SoftScrub cleaned that up, over 1e12 ohms.
We're going to develop a path to go from a PADS pcb layout to whatever formats the Boss likes. I can't Dremel for fine-pitch or BGA parts, but this should work.
Some of the Chinese engraving lasers are cheap, just a few K$, but we'll go with Boss.