Laser pointer rotary switch
thingiverse
Simple addition to a cheap laser pointer that makes turning it on accidentally less likely. Instead of pressing a button the user has to turn the switch to engage the laser, this also allows the user to leave the device turned on without holding the button. The laser pointer I designed for has a round case with a diameter of 23mm and a round button of about 5.5mm diameter, this is a generic Chinese green pointer powered by 18650 lithium cell.
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