A safety switch has been added to the butt of the flashlight body which houses the laser diode. When the safety is flipped on an LED blinks to prompt the user for a security code. If you enter the ...

While he was initially planning on using a diode laser, doing anything more than engraving is tricky. He purchased a cheap 40 W CO2 laser tube, but it meant that he needed water cooling ...

I built a 3D printed, scanning laser confocal microscope so I could ... not latching door Here are the details on the Social Security retirement age changes for 2025 Donald Trump’s data purge ...