He can do a lot of work with it but it will be extremely frustrating for him. In some circumstances HF can lower duty cycle. If he had a HF unit or got one for free, then he could hook it up and try it. It will not be a substitute for a DC machine however. Since he would have to spend up to $100 or more and search for who knows how long to find a good HF unit, why not look for a used DC welder which should be easier to find. He could sell his Thunderbolt and recover some of his money. I didn't ask for your resume. I asked what tickets you have. It would give credibility to your posts and show you had some formal instruction. Are you even a licensed welder or just do it for a hobby? I've never needed an HF unit for stick welding and I've used a few Thunderbolts with regular 7018 before the AC versions came out. In my opinion they are one of the harder machines to weld with. An AC225 Lincoln is much easier in my opinion as is a Forney, Comet and a host of others. I have no doubt the HF would make it easier to use. You know what they say when you assume something. A DC welder from the 40's is superior to a low end buzz box. If you have an SA200, why bother with the Thunderbolt? TIG welding aluminum with a Thunderbolt would be a very slow process and an easy way to burn it up. I give opinions based on many years of experience and training. For the most part, it is to help people who are having problems with their welding or equipment. That's why I always give an explanation for my responses. I take exception when someone disrespects my opinions with sarcastic comments as I'm sure most people would. HF units are known to cause health risks and wreck some electronic equipment. HF can leak and cause these problems the same way a microwave oven could if the door was damaged. There is no safety on HF units or cables it runs through. I worked in a shop with a Syncrowave 250 TIG welder and none of the meters on the front worked because the high frequency went through the TIG torch cable that was still wrapped on the cable holders on the machine cart. The radio in the shop also got static when TIG welding with the HF. There is a reason they are getting away from HF as much as possible. Most plasma torches don't use it anymore and the hot set up for TIG uses an inverter power source that only needs HF for starting the arc on aluminum. These machines also use the same sharpened 2% thoriated tungsten for welding steel to weld aluminum and similar metals. And lastly but most importantly I'll repeat: "BETTER EQUIPMENT MAKES FOR BETTER AND EASIER WELDS! ESPECIALLY FOR BEGINNERS." The fact that some people even on this post agree with me confirms what I'm saying. When I'm in a bookstore and see a welding book, I'll check it out. The winner of the AWS welder of the year award a few years ago even says to avoid a cheap AC machine when you're looking at buying a welder. He's a navy certified TIG welder and very good at it. You may have heard of him, Jesse James. Think what you want of him but he's a darn good welder. The book is the Monster Garage book on how to weld almost anything. Dave
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Today's Featured Article - Show Coverage: Godfrey, Illinois Country Days - by Cindy Ladage. Except for last fourth of July's Old Gold show in Springfield, Illinois, I don't remember when it was so hot. Nevertheless, the heat didn't keep vendors and visitors alike from enjoying the third annual Country Day's Event. Jane Elliott said the event was originally a one man show. "Barry Seiler, owner of Country Town Farm Supply store used to invite people up to the Johne Deere store. He would give hats and a free meal for everyone that brings a tractor." Elliott said while this
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