Two of the best tips so far mentioned are the use of Argon as opposed to Co2, as Argon is not as "cold" as Co2 when welding ( if you are feeling really flush try Aztec 25, which is a mixture of Methane/Argon). The other one is the use of copper as a backing plate, I've use this technique for many years now, and even the largest hole can be welded up. Once you get good at welding with MIG, you will be amazed at what you can acheive, believe me you will not be needing much in the way of filler !. Interestingly enough, steel from the 40's welds exceptionally well, much better than today's steels, far too many impurities these days.
Regards
Keith
Last edited by Keith Orpin; 09-07-10 at 00:24.
Reason: Text change
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09-07-10, 00:18
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