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Hi George, Theoretically there's one best way to do anything. In actual practice several factors usually make the decision less clear. The skill necessary to do something the best way possible may not be possessed by the person who has to do it. Ditto for equipment, supplies, facilities, etc. The best way to do something under the existing circumstances may be quite different from the best way possible under optimum conditions. Crispin stated that his experience is pretty much limited to O/A brazing and cutting. That being the case, he might very well obtain better results using the less absolutely preferred method that he is familiar with rather than the very best method that will necessarily involve some on the job training for him. You state that you've been repairing cast iron for over 40 years. In my experience, people who have become expert at something almost always find it impossible to remember what it is like to not know anything about it. A hundred variables are so familiar to you that you automatically deal with whatever comes up without even having to consciously consider it. The novice has no such benefit. I'm not saying that I wouldn't benefit by doing more homework on any issue that I'm not an expert on---like this one---but there's an element of common sense involved here that you aren't giving me credit for. All the best, Stan
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