I've heard to use a pumice stone like you use on your feet. Never use emery cloth though. It will cause unwanted arcing. Hobart made good generators. If you need new brushes, a carbon brush supplier can make some up for you. I had an old Hobart from the 40's and had brushes made locally. Not really expensive at all. They can test the old brushes to see what composition they are by their hardness and colour I think. The place up here specialiized in brushes and knew pretty much what to use for each application. The machine I had had an electric motor on one side and the welding generator on the other end. It also had an extention on the shaft so a gas engine could be hooked up. Who ever had it before me mounted it on a trailer and powered it with a Chrysler IND 251 ind. engine, probably out of a combine. The fine current control came out and you could put an extension cord on it for a remote control. There was a name for these welders but I forget. I saw an old ad for one on the net. Good welder. Dave
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Today's Featured Article - Third Brush Generators - by Chris Pratt. While I love straightening sheet metal, cleaning, and painting old tractors, I use every excuse to avoid working on the on the electrics. I find the whole process sheer mystery. I have picked up and attempted to read every auto and farm electrics book with no improvement in the situation. They all seem to start with a chapter entitled "Theory of Electricity". After a few paragraphs I usually close the book and go back to banging out dents. A good friend and I were recently discussing our tractor electrical systems when he stated "I figure it all comes back to applying Ohms Law". At this point
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