Laser light guns destroying random stuff

Patrick Priebe, who makes a business out of building laser light guns and gadgets, has a YouTube channel that come peppered with irate video text descriptions that go “DON’T ASK FOR PARTS PLANS TUTORIALS”. At first we wondered what was up with all that screaming, but if you take a look at one of his demo videos showing how the gadgets he builds actually destroys other stuff using nothing but light beams, you start to understand why.