I worked on Lasers that burned perforation holes in acetate filters. They work great but they need periodic expensive maintainance to keep them going. They work by evaporating most anything near the focal point of the beam. Same principle as seen in the video. Unfornutately things that get in the way like fingers and eyeballs can be evaporated as well. The material being evaporated may emit a gas so one should do their research in case the gas is toxic. Glass, glass-like materials and mirrors can pass or reflect the beam so Laser safety goggles are needed (eyes concentrate light and can burn from the inside). In the video I could see differences (depth of burn) when the laser was making a pass. Probably handheld. For more precision a holding fixture is needed that would insure the same distance between the laser and target are maintained. The warranty is only 2 years on the cabinet and 1 year on the fiber laser. One would hope the seller/manufacturer would supply refurbished swap-out parts at a disount to keep the laser working.
