Have a question I came up with during a sleepless night...
Say you had a piece of aluminum that had a hole drilled/bored in it, and that hole had a crack running to/around it that you wanted to weld up.
The kicker is that you want to minimize/eliminate re-machining the hole after welding.
Can you simply plug the hole with a proper fitting plug of something like tool/carbon/stainless steel, and then weld the aluminum?
What about using graphite for a plug?
The thinking being that the aluminum being applied by the welding process wouldn't stick to the plug being used, thus minimizing the necessity to re-machine the hole.
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