500 Amp Welding machine rebuild

[Frank S]

It's been a while since I did this on ebut I thought I would share.
This is a 500 Amp Miller Air pac with a 12 KW 3 ph option it was in pretty sad shape after being used by the railroad for many years, but it still ran and all systems functioned as they should so that made it worth rebuilding






Railroad track Forming anvil die I welded a strip of flat bar to one side of the rr track so I could have a different forming anvil shape for straightening the top and side covers


Some covers were missing so I had to hand make them

Laying out for perforation punching

Using my Roper Whitney 8 ton manual punch with a special ground die to make the oval perforations the Die and punch were bought from Cincinnati punch works


Splash on a little paint and good as new. Almost impossible to tel which panels were straightened and which were hand made



add a few decals and that is how you take a $800.00 salvaged machine to being sold for $15,000.00