Quote:
Originally posted by rouxroux
Obviously someone's done their homework. Must have read Richard Finch's book! Down here, there are some guys that take so much pride in their work they'll even attempt clean fillets on oilfield work...now THAT's dedication!
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I have Finch's book, however his opinion on welding 4130 thin walled tubing is not correct IMHO. He makes the claim that all 4130 tube structures should be welded with 4130 filler rod. This is fine if the entire structure is then going to be heat treated, but most of the high end aerobatic fuselage builders use ER80 filler rod (same goes for the Lincoln Welder weld shop set up at Indy each year during the month of May).
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