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    Lowering temperature and increasing curret vs lifespan

    High, I've searched the forum but I haven't found any info. Did anyone try to use 500mW diode cooled to bellow -20*C, and double or triple its power? I want to cut a 3mm aero-depron and my guess is that I need 1W+ power to cut it at reasonable speed. Since the cost of diode increase...