I bought a Lincoln Ac 180 AMP arc welder for $15.00 and was wondering when it was made. I took it apart to clean it up and to my surprise everything in it is copper. My friends newer miller welder has aluminum windings so I'm guessing this is a pretty good home welder. I also want to know if parts are available as the switch is kind of rusted but is working. The model # is AC-180-S and the code # is 5347-602. I did have to replace the the power cord and leads which cost more than the welder. I was also surprised to find that it had no fan on it. Thanks for any help.