First of all 7014 is not a low hydrogen rod. It is an iron powder type rod. Secondly, on an AC machine, there is no such thing as reversing the polarity. AC means alternating current. 7018's made specifically for AC machines will work better on them than the standard 7018. That's why they make them. A standard 7018 is designed to be used on DC reverse polarity or AC current but on the cheaper AC welders, they can be more difficult to weld with than the 7018 that are made especially for AC machines. 7018 are usually the only rods that are stored in a rod oven. 7018 are low hydrogen rods and way stronger than 7014. As long as other rods are kept dry, they shouldn't have any problems. Some rods like 6011 or 6010(DC) can dry out too much. 6011 although a rougher looking weld will be easier to strike an arc with using an AC machine. Dave
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Today's Featured Article - Madison's County - by Anthony West. Philip Madison has been a good friend of mine for quite some time. He has patiently suffered my incessant chit chat on the subject of tractors for longer than I care to remember, and on many occasions he has put himself out, dropped what ever it was he was doing, to come and lend a hand cranking handles, or loading a find onto a trailer. Although he himself has never actually owned or restored a tractor, he was always enthusiastic and always around helping with other peoples projects.
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