When I said 200 amps plus, I still met multiable pass. aluminum has a very high heat draw. The last shop I worked at I welded up all aluminum coolers up with everything from 1/8 up to 1 thick and NONE of it was done with out some pre heating and in most cases multi passes. Yes you may be able to do it with a smaller machine but your going to spend a VERY long time doing it, just remember that those smaller machines when turned up have a very limited duty cycle that may not be long of enough time to weld it with out burning up your machine. If its just a one time fab job drangsbane is right try and stick weld it, just see your local welding supplier and they will fix you up with the right rod. Just practice on some scrap that is preheated and you should be alright. Just to give you an idea of what it will cost to get to a high amp machine by the time I walk out of my welding supplier on the last two 250 amp plus machines both went over 3 grand each. Its all in what you expect out of your machine and what you want to spend, as the saying goes pay me now or later.
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JEFFY |