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Old 04-26-2015, 11:57 PM   #15
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Join Date: Jan 2013
Location: Leonardtown, MD
Posts: 1,290
Re: Repairing Sandblast Damage

Don't buy in to the water Kool-Aid. Too much pressure and too coarse of media results in a peening action that stretches the metal. You can media blast under water if you think it will keep things cool enough for you, but in the end, given enough pressure and coarse enough of media, stretching will indeed occur despite external temps. I'm not saying the pressure washer system doesn't work, but they are playing on hype without understanding (or revealing) the true cause.
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