What is the great use of a welding machine?
Use flux core wire like Hobart Fabshield 21b and set the machine to max voltage, then adjust wire feed accordingly. Flux core just plain penetrates better that bare wire on 115v wire feeders. Make sure you follow the recommendations on the wire for polarity. A lot of disappointment has come from not changing the polarity when required.
Plug into a dedicated 20 amp circuit. Most household circuits are 15 amp. You might have a 20 amp in your garage. If not, consider getting one.The first thing you need to know to be a good stick welder is that you need a decent arc welding machine. Not a great machine, just a decent arc welding machine. Like a Lincoln 225 A/C tombstone arc welder,We should have the confidence and make great effors to expand overseas PE fittings market in order to look for more opportunity of development. or a Miller Thunderbolt Stick welding machine. Both can be bought on eBay or Craigslist for around 200 bucks.
The second thing you need is a decent auto darkening welding helmet. 50 bucks will get you a decent auto darkening welding helmet if you know where to look. A decent auto darkening helmet darkens in 1/20000 sec, is adjustable from 9-12 shade, and has sensitivity and delay settings.
Why do you need one? Because when you are scratching around in the dark, you can be off track by an inch or more and you will get arc strikes all over the place. With an auto darkening helmet, you can see exactly where you are striking your arc and that alone will make you a better stick welder.All joints are normally x-rayed in an aerospace tig welding certification test. Metals like titanium, aluminum, and magnesium are prone to porosity. Remember the 3 C’s …clean, clean, clean. Especially important is filing the sheared edge of metal that will be welded. That sheared edge looks pretty clean but it is a trap for oil and corrosion products. File it and when you think you have filed it enough, file some more.
Everything makes a difference. Little things like the size of your tack welds, how you position the test plates in the fixture, how much flow rate is used on the purge gas, angle of torch, angle of filler metal rod, what kind of abrasive you use to clean the metal, how pure the argon or other shielding gas is…you get the picture. Like my old coach used to tell me…nothing is fair, but everything matters.
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