Introduction: 405nm Handheld Laser
In this Blu-ray laser I use brass fittings and aluminum tube, it was using 3 x 3.6v CR123A rechargeable, using DDL driver.
tail switch was came from scrap varcade video game snap switch., it was perfectly fitted on the aluminum tube, and covered with insulated sticked and paint it with black acrylic epoxy spray paint.
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Please be positive and constructive.