I looked at the miller line of welders was looking for something small and portable new or used it didn't matter as long as it was in good condition .Well the one i picked up was slightly larger then i needed and looked to be in ruff shape but it works . I plugged it in this morning and struck a arc on a rake but it was out of wire . Now you said something in regards to the heads do you have pictures of the different ones . While cleaning up i found 4 of them lil tips don't know if its the same but idk(1st time ) .Another question the wire that was in the gun was thin and the guy i got the welder from gave me some thicker wire but it doesn't seem to fit in the feed thingy. Do you know good place to get wire from i was thinking about going to harbor freight since they sell them and pick up some .Any good cleaning tips (and i mean for the tips) .Also if i wanted to get the gas for it where would be a good place to get it .