If you’ve used a diode laser engraver or cutter, you know that focus is critical. You’d think it would be relatively simple to get a sharp focus, but it isn’t that simple. [Makers Mashup] shows in a ...

Cutting grass with lasers works great in a test setup. (Credit: Allen Pan, YouTube) Wouldn’t it be cool if you could cut the grass with lasers? Everyone knows that lasers are basically magic, and if ...

What's better than a custom-built laser sword with a 6W laser? How about a 40W laser shotgun built from an array of eight photo diodes and a focusing lens? Share on Facebook (opens in a new window) ...