flux ok or no go
I`ve been tig welding for quit a few years now, so if your new at it be patient, it will take some practice and yes you can tig in any position , these new inverter type machines the settings on ac/dc are many like on dc they can pulse from .o4 up to 999 pulses per second ! with the ability to also set your peak welding current [ pdu] and your background current [ilo] to control heat input, on a/c you can change your freq setting from the normal 60hz at your outlet up to 200hz-400hz, and set your balance for better cleaning or more penetration and also pulse !....ALSO be aware that some of the off brand machines MIGHT have a default amp start, which means it might start an arc at say 20 amps or so even if it has a low amp setting say 4 or 5 amps, ....Also the best all round tungsten for ac / dc is 2% lanthinated , for mild steel use a er70-6 filler rod, it won`t give you a hard weld, don`t use an er70-2 that's for 4130 chromoly steel .... here`s a couple of pics of what you can do with a inverter tig .... razor blades and a soda can
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When you can weld like that every one shuts up and listens
Dennis B.
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norunz nice weld beads, the machine you described sounds expensive, more expensive then the welder/plasma I will be buying. For the odd time I will use it, mainly restoring my car, I can't justify spending that kind of money. You must do this for a living or just like to buy the best, which I too do sometimes, with some things, not all things I buy . If I was to buy one without the pulse feature, would that make it harder to tig weld the quarters in that position?
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Why don't you take some pictures of what you want to do and how you want to do it, so its not such a general question.
Nice demo norunz, like Doright said---the proof is in the puttin! |
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it just shows what technology can let you do, these new inverters are great, they are the size of a mail box, weigh roughly 30-40lbs and use way less electricity than a transformer style Lincoln and miller are usually the top names and are great machines, but they are expensive, mine is a HTP INVERTIG 221, it was half the price of the other two, Everlast, Thermal Arc, ESAB and a few others make excellent machines at a decent price
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I'm not very good at attaching pictures and such into a post, I've tried before, generally I have problems. It's basically a quarter panel on a 69 GM car that cannot be worked on in a flat position. The car right now is apart and sitting on jacks and any welding would have to be welded has the car sits, so the welding would have to be done in a horizontal and vertical position and overhead, some other welding such as the floor however, would be done in flat position but not much. So being able to weld in these positions without the pulse, would be a concern, especially it being done properly. All input and help is appreciated.
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I would suggest that you stay on the bench with flat easy welds until you get very comfortable with that before trying anything else, especially before anything on your car. You might want to check and see what classes are available in your area. Here are some good tips https://www.youtube.com/watch?v=Clg6e_c7Ua4 I think this guy is the best that I have seen. https://www.youtube.com/watch?v=UNAAhwieNhU After practicing for what seems like a few years LOL, then it will be easier to do what ever you want, but I always try to practice when trying something that I haven't done before, or maybe just not in awhile, before starting on the actual project. But to answer your question, yes you can weld a panel that is on the car (go uphill for a vertical weld), its just a lot easier on the bench when using a tig because, for one thing, you have to get creative with ways to operate the foot pedal---in some welding positions And tig welding is much more precise, you need to have good control of the torch and filler rod. With a mig you can use your off hand to point and control the torch, but with tig you need to rest your hand on something to steady it because the off hand needs to feed the filler rod, and it also needs to be steady and precise. https://www.youtube.com/watch?v=-memgUOhBq4 |
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Remember also for tig you need clean and tight fit up, don`t get me wrong you can tig weld gaps and mis alignment with tig, but your defeating the purpose, its easier with mig
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Joined: Tue Sep 16, 2008 1:17 pm Location: Pahrump NV. Country: USA |
I disagree with easier with a Mig
A mig is just cheating especially on sheet metal any one can lay bead on bead to fill a hole or gap with a Mig try it with Gas or a Tig and you'll learn why Panel fit is so important to begin with. Anyone can lay a Bead on Bead or Draw a nice Bead on thick steel or Aluminum Laying a long Bead with Tig or GAS on THIN sheet metal can be done but not with a Mig it just cant be done with a Mig, All you can do is tacks and stack them and over heat the panel and or Blow through plus the Bead is ROCK HARD! Dennis B.
A&P Mechanic, FCC General radio Telephone Operator Line Maintenance A&P Mechanic and MOC Tech specialist. |
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I'm in a similar position as the op. I have a project car and want it done as well as it is possible for a complete noob to do. That gas welding looks pretty cool. But you say that you have to be able to reach both sides of the panel? My car is a uni body and the most notorious rust places are where water and crap get stuck between two panels. So that won't happen much. Plus I have to buy a bunch of paint stuff and body working stuff in addition to my mechanical stuff. So rather than the best tool for each situation I am looking for the 1 tool that does them all. When I asked other people before joining this forum the recommendation that I got was for mig. And if you want it to look nice then get the gas. If you have to you can even do aluminum as long as you get a spool gun. Is this still good advice for a guy in my situation?
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