Originally posted by TimB
I suggest you reapply for your weldoing course. it seems you're abit out of date;
Automated TIG welding has been used extensively by Giant and other manufacturers.
it is not the easiest welding method to master, Mig welding is. But it has other draw bacs which make it unsuitable for Bicycle frame manufacture.
When you have 15 years experience, you can decide for yourself which type of welding is easier to do. Any body with limited experience on a tig, knows that it is much easier and cleaner than a mig. Also, anybody who can use a mig, can weld a steel or aluminum bike frame with that process as well.
What you consider to be "automated tig" is actually known as Orbital Welding. Perhaps you should brush up a bit on your internet searches for information.