Hot Rod Forum : Hotrodders Bulletin Board - View Single Post - Phosphoric Acid + Prevention of flash/surface rust
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Old 07-21-2003, 07:36 PM
asennad asennad is offline
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The problem with PA is that it only gets the surface rust. If the rust has any thickness at all it will only change the top layer of rust and leave the sub-surface untouched. I would hit any rust with a 60 grit sanding pad to ensure that there is no rust left to rear it's ugly head down the road.
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