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Old 12-17-2006, 10:12 AM
oldred oldred is offline
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I too have used sandblasting to prep weld areas for years and welding body sheetmetal that has been blasted is about as common as anything can be. There is a theory (or rumor) that the silica embedded in the metal can cause a loss of strength on body panels because the amount of silica will be high in proportion to the size of the weld puddle. Personally I think this is a bunch of bull and is of no real concern but since it is so easy to remove it may be a good idea to do so, as far as being able to tell a difference in the welding characteristics I can't see much if any difference.
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