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Old 2018-03-07, 8:50am
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Frit Diva Frit Diva is offline
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I don’t know the answer either, I was taught to use 316 but never knew why. Here’s an interesting article about the properties of different stainless welding rods ~ doesn’t directly answer your question, but explains why 316 is probably recommended (corrosion resistance).

http://www.weldingtipsandtricks.com/...allurgy-2.html

Do you think you might have gotten some mislabeled rod? I don’t recall having a similar problem, but I haven’t made new mandrels in a very long time....
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Last edited by Frit Diva; 2018-03-07 at 8:55am.
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