what do you think

if you really want a mig welder save and get one you can use gas with. i got one like that for xmas and took it back and got the gas one. much cleaner welds.
 
just something to learn to weld with i thought it would be pretty decent

to learn to weld yes thats fine. lots and lots of practice its much cheaper for practice. dont use it to weld anything they is part of the main structure of your blaster or car or anything like the frame a-arm and swinger get good with it then save up and by a nice 220 mig with gas or even a tig welder if ur feeling frisky but once you are good you can use these to weld just about anything
 
That is no good for welding a frame. You will end up making a mess and weakening your frame. Bubble gum will work much better. Honest.

15+ years of welding, and I've used/owned a few welders.
 
Whatever you do be safe!! Keep a fire extinguisher handy.

x2 on that! Watch your pants, too! Just because you are welding with a heavy leather jacket, helmet, and gloves on... I found out real quick that jeans are in no way fire-retardant...

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If I were you, I'd skip the cheapo units and invest in a name-brand welder. It will pay for itself in a hurry. As said earlier, cheap welders make a mess and don't leave behind good (or sound) results. Lincoln, Miller, or Hobart all produce fine welders. Hobart and Lincoln have a couple models for under $ 700.00. You can probably score a good used one for a few hundered $$, or perhaps even trade for it.

I have a Lincoln PowerMiG 140 gas welder and love it. It runs on 110V, but I can weld just about anything around the shop with it. It plugs in anywhere and does well with either flux-core (gasless) wire or regular MiG wire + gas. Using flux core wire to weld does make more of a mess, but once you get good with it, you can lay down a nice bead without gas. Flux core wire also burns hotter, so you can weld on painted surfaces if you have to or outside (where shielding gas can get blown away in a breeze).
 
HA @ the pic. I have several sets of jeans like that...

+1 on braptors recommendations. If you don't have 220V handy the Lincoln Pro-Mig 135/140 is an excellent choice. It's light duty to someone who welds building members together but it'll do most anything you want to to a blaster without breaking the bank. I bought mine with a 10lb roll of flux core and a auto-darkening helmet for $500.

Hobart/Miller also make excellent units. I used a Hobart handler 140 (which is really almost the same thing as the Licoln pro-mig 135) and it works great.

You'll be better off in the long run saving your beans and buying a name brand welder.