Links below are to use of a pressure washer and media blast gun. Looks fast and no dust. If you are going to wash the metal anyways, then why not. BTW, I have not tried this.
I HAVE tried something similar. Mine used my pressure washer, and just changed the end of the gun to accept the media blast's gun (wish i had pictures to better explain). The media was syphoned up through a tube and the water blasted it out the nozzle. It worked decent for a few minutes. I was just experimenting on a tailgate. Obviously, with there being water, there was immediate surface rust. Also of note: when I put my pressure washer away, I came back a day later and something had cracked somewhere because there was oil everywhere. Maybe my gas powered pressure washer couldn't handle it? Who knows. YMMV
