YouTuber Builds the World's Most Powerful Handheld Laser Pointer and It Can Instantly Melt Glass

If you’re inspired to build one of your own at home: don’t!

from gizmodo http://www.gizmodo.co.uk/2020/03/youtuber-builds-the-worlds-most-powerful-handheld-laser-pointer-and-it-can-instantly-melt-glass/