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Miller Econotwin HF Question

Greetings all,

I ran across an Econotwin HF in the garage of a guy that wants me to build him some parts out of Alum. plate(.120). There will be some welding done on these pieces, so I got to thinking I could maybe do some tinkering and see if this thing works, it is not the property of the shop owners. I did not get to inspect the machine very well, but I did find an owners manual on Millers website that answered my initial question, does the HF mean High Freq.? It appears that the answer is Yes, No? Otherwise, any caveats or funny little quirks I might need to know about? I used an Econotig a few years ago, bout the same?

IF this little escapade does work out, I will probably "advise" the owner to get a simple dry rig to put onto the Econotwin, they would probably not do enough welding(Alum. of otherwise) to warrant the purchase of a water cooled torch. I will also suggest using 1.5% Lanthanated Tungsten for its dual use on AC or DC.

Thanks for any and all advice, Jim

PS For anyone interested, my boss did finally purchase the Synchrowave

350 LX. This is truly a beautiful machine, and I haven't even got the hang of the pulser yet, but when I do.............
Reply to
Jim C Roberts
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Zirconated Tungsten is MUCH better for AC TIG on aluminum. There are many aluminum alloys that can't be welded (or at least the results are quite inferior.) Is this an AC welder, or square wave? (ie. does it have an AC balance control?) That makes a BIG difference.

I'm still learning TIG of aluminum, but getting better, a little at a time.

Jon

Reply to
Jon Elson

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