Abstract :
Previously, I\´ve written about how to build a low-power laser engraver from the guts of a DVD burner [see "Laser Cuts Paper," IEEE Spectrum, June]. My fully automated setup was similar in spirit to that of a commercial engraver, and while effective for small areas, this approach quickly becomes unwieldy if you want to burn larger areas. You need longer rails and leadscrews, bigger stepper motors, more structure, and more space.
