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#1
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The drill rod could be in it's tempered form ( not heat treated ) .
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#2
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I'm not sure what grade the drill rod I have been using is. The local metal supplier only has one kind so I just get what they have(blue paint on one end). I know that I overheated the piece I was referring to. I welded a very small piece to a big piece and then tapped it with a hammer to straighten it. It broke right off but not at the weld. Anyway, I went back to using mild steel for those parts because it's much cheaper and I save the drill rod for the important parts!lol
Sorry for taking your thread off topic RW. You're doing a great job on the excavator rebuild. By the time you are done it will be a whole new machine! |
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