First off, everything I've read about dustless blasting says to use ground glass, not sand. Would it make a difference? Don't know but that is one thing I picked up on. And then to start blasting with everything installed like door latches and window regulators? Really? And to make statements like "if you didn't know it was there", you'd have to be brain dead to think that the abrasive isn't going to get into every nook and cranny if you are careless. I look at that video as nothing more than a hit piece.