For the last twenty years laser cutting/processing has been wide accepted and has continued to increase in a particularly rapid manner as standard cutting technique due to the large number of advantages achieved by this technique in comparison with the conventional methods /i.e. chem-etch stencils/. Excellent paste printing performance with high resolution / 20 mil and lower pitch apertures/, wide variety of stencil materials and no disposal as a serious environmental concern. Motor control optical focal length positioning is developed with higher accuracy, trapezoidal aperture walls /reduced dross/ and less stencil clogging. CO2 laser system driven from PCB CAD / CNC data with introducing uniform spatial laser pulse distribution on working sample.
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