Within the next month or so I will probably be getting a mig welder of some sort. Right now I am leaning towards the MM175. I will be doing many different types of projects but I will not be working with enough heavy material to warrent a need for the 210. I am also 17 so I really don't want to spend the extra money on the 210. A mig welder is a great and very important shop tool that my garage is missing. However it is also one of many tools and right now I still need misc things like a drill press and a band saw in orderd to be able to fab the stuff that I'd like to. I need to reserve some $ for them. 
Anyway, my question is will I actually be able to weld with it? I have done some oxy/acy welding and it is very difficult. I am still far from good at that, but I hear mig welding is much simpler. Is it basically a point and shoot tool or am I going to need to take a class in order to use it? I will probably take a class anyway but I will not be able to do that until next summer.
Also, is there a chart that someone can point me to that lists what wire speed, wire size, shielding gas mix, what gas pressure, and what type of filler should be used when welding certain materials? I will be using mostly steel. From what I gather people usually use either a 75% Ar 25% CO2 mix or just pure CO2. Is this correct? Sorry there are so many questions
Thanks very much for any info.
-Dave-

Anyway, my question is will I actually be able to weld with it? I have done some oxy/acy welding and it is very difficult. I am still far from good at that, but I hear mig welding is much simpler. Is it basically a point and shoot tool or am I going to need to take a class in order to use it? I will probably take a class anyway but I will not be able to do that until next summer.
Also, is there a chart that someone can point me to that lists what wire speed, wire size, shielding gas mix, what gas pressure, and what type of filler should be used when welding certain materials? I will be using mostly steel. From what I gather people usually use either a 75% Ar 25% CO2 mix or just pure CO2. Is this correct? Sorry there are so many questions

-Dave-
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