00:00This is laser rust removal. With just one sweep, the rust vanishes like smoke. That beam can heat
00:05the metal surface to over 1,000 degrees Fahrenheit, basically blasting off the top
00:10layer in an instant. But here's the weird part. When it passed over this guy's hand,
00:14he wasn't hurt at all. So, are lasers harmless to skin? Not quite. This one is a carbon dioxide
00:20laser, and its power is only a few dozen watts with very low energy density. It's usually used
00:25for engraving patterns or cleaning wood surfaces, not cutting metal. Because it scans so quickly,
00:30even if it touches your skin, the heat doesn't have time to build up. So, it looks like nothing
00:34happened. But don't get it twisted. Real industrial cleaning lasers are a whole different beast.
00:40They can blast out thousands of watts and focus hundreds of joules into every square millimeter.
00:44They can strip rust spec by spec off a coin or slice straight through a steel plate. If that kind of
00:50laser ever hits your skin, it will burn, carbonize, and leave a permanent scar in just milliseconds.
00:55So, yeah, don't confuse the two. This is laser rust removal.
