Unfortunately, Notre Dame is not just covered with a surface coat of soot. The demo would have been more impressive if the limestone had been seen to be glowing white hot. That would have taken about half an hour with that blowtorch turned to maximum and playing on the one spot.
![Most powerful 2000W handheld cleaning laser [4K compilation]](http://i.ytimg.com/vi/ssaNTgwY8zE/mqdefault.jpg)
![Most powerful 2000W handheld cleaning laser [4K compilation]](/img/tr.png)
Unfortunately, Notre Dame is not just covered with a surface coat of soot. The demo would have been more impressive if the limestone had been seen to be glowing white hot. That would have taken about half an hour with that blowtorch turned to maximum and playing on the one spot.
Nice!
Is that a pulsed or CW laser?
Cost??