The world’s most powerful handheld laser delivers an extraordinary 250 watts of output, ... Burn through and weld razor blades, showcasing its potential for industrial applications.

It can also weld razor blades and make synthetic rubies By Rob Thubron June 5 ... We're now living in times when a YouTuber is able to build what is apparently the world's strongest handheld laser.

This is much more than one of the best laser engravers we've tested. Offered as a 4-in-1 machine, the M1 Ultra packs in a 10W or 20W laser engraver, full-color inkjet printer, cutter, and pen tool.

However, there’s a good reason for the blade-to-handle ratio: ergonomics. The large finger choil (the cutout just behind the blade) pairs with the finger ring (the large hole at the handle’s base) to ...