Thread: water/sand blasting

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I've seen this process used on boats, where they use a sand/water mix under high pressure to blast off antifouling paint off of the bottom of the boat to prepare it for new paint, but never on a car. The concept is that pure sand would eat away the bottom too severely, but the water keeps that from happening. Wouldn't the water instantly rust the metal? I know even regular sandblasted steel rusts almost instantly from just humidity.


Don

water + sand = instant rust . the water will take the sodium into cracks and crevises. i blast cars here at the shop and would never think about this or paint a car that was done this way.