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    PWM vs CW for laser cutting/etching

    What are the trade offs for pulsing a diode to reduce average power vs CW at a lessor power for cutting/etching applications? (I'll be using a 1W 405nm laser diode) I'm building a RepRap style CNC Laser cutter / etcher, primarily for PCB fabrication using the black paint and direct UV exposure...
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    Dead BDR-209

    Just received a BDR-209 in the mail today, awesome service from Jordan. Purchased it for a cnc laser cutter project that I've been designing for weeks, ended up self destructing the diode in a power on test. Not really sure what went wrong :yabbem: Power on test was done with a crude LM317...


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