what are we looking at? wheel hub? base of a light pole?
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Whatever is the casting?? Hadn't seen Evan Daniel's reply...
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It's an old water pump:https://twitter.com/Meaningness/status/1107036019021352960 …
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Out of plain metal fatigue
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And stress concentration at end of stiffeners
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The weld came first; not sure why. The screwed patches because the weld failed. The weld failed because welding cast iron is really hard to do well, and tends to create lots of stress in the heat affected zone.
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definitely not jet fuel :D
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Bad weld -- after the fact, before the patch??
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