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How much space around weld area should be weld-thru primed?
As the subject says, I'm wondering how much space around the weld area should have weld thru primer? For example, when preparing the back side of a part that will be but welded in, but not accessible for priming after welding, I've been putting down epoxy but taping off the but weld edge with 1 inch tape. Then putting weld thru where the 1 inch tape was, then welding. Is this the correct procedure? Or should I just be putting epoxy on the whole piece and what burns away, burns away?
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