When I wanted to learn how to weld, I got some advice from some professional welders who had been welding for years and years about what they would get.
So I found some used pieces (Thermadyne 300GMS welder and Lincoln LN-25 w/Gas Solenoid setup for .045 flux core wire, with some extra flux core wire)
and bought them.
Then I tried to learn how to weld with them…..
The welder has 3 switches (each 3 position), and two knobs (Arc % and Amperage/voltage), which, if you’re new, lead to an infinite number of settings. The wire feed unit has a CC/CV switch(Constant Current(formerly Variable Voltage)/Constant Voltage), a polarity switch, and a wire speed dial. My local welding shop wasn’t familiar with the Thermadyne, so they couldn’t tell me how to set it up. Called Thermadyne, waited for the manual, and read as much as I could about wire feed welding (GMAW)
The more I learned, the worse it got. What type of welding will I be doing:
Spray-arc, Globular transfer, or Short-circuiting? Do I weld CC or CV? Do I weld gas or flux core? Pure argon or a blend? What type of material am I welding? Have I done a spark test to see the carbon content? That will affect the electrode I should use. Electrodes can be bare or shielded. Electrodes for welding mild steel can be classified as fast freeze, fill freeze, and fast fill. With ac welding machines, polarity is not a problem. When using dc welding machines, you can weld with either straight polarity or reverse polarity. Do I need to weld with reverse polarity? Isn't .045 too big for most stuff? If I want to switch spools, don't I need an adapter and new rollers? Aren't those gauges you are using for oxy instead of argon? Man, you are lucky you are still alive.....and on and on it goes. I've spent more time in the welding shop than I have welding, with more stories than I care to mention.
I’ve learned a lot along the way, and I still know nothing compared to most welders.
But I’m getting better......
Based on my experience: Welders if taken care of, will last a long time.
a) Buy something as simple to use as possible, whether it’s stick or wire feed……
b) with as much current as you can afford – you can always turn a big welder down, but you can’t turn a little welder up.
c) Get a name-brand-been-around-forever welder, if you want trouble free no hassle use, with excellent support everywhere if you need it. I can get parts and consumables at multiple shops locally, and on the internet.
Next you’ll be asking about a welding helmet. A good auto helmet will cost more than the welders you’re looking at…..
