More than one weld has been ruined by sorry prep work. Yes, I have done it myself, and any self-respecting welder will admit to having made a few rush welds that didn’t have the kind of prep work it needed with epic “fail” results. No, it may not be in a serious situation…or it may just be a small tack weld, but sooner or later we all allow impatience to get the best of us.