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What are you guys using? I have a mig and I have already did the most of the metal work on my challenger.

now i know i don't need one put i still have some more work to do on the challenger then tackle my girlfriends dart which will need 2 full quarters and a trunk floor at least. So i think a spot welder would make just a little easier.

i was looking at the miller 220V version

http://www.millerwelds.com/products/spotwelders/msw_and_lmsw__air-cooled_/



I have used a hobart 220 unit and the Miller 220 unit in the link above. A timer is a must, as power is only applied for like .8 a second on thin sheet metal on cars. There's no way to trigger it the same each time without a timer.
The Hobart that Markz528 let me borrow had a home made timer built by him, worked great. I never did mount it in a box,put on a peice of plywood.
Then I wanted to get one of my own and found a used Miller dealon Craig's list with a foot stand and timer. The guy was asking $350 but was happy to take $300. So look for used. Buy a Hobart, Miller, not a import.



Marz528 Hobart machine with custom timer on that peice of plywood.


The timmer right after he built it just for me to use in a hurry.