Last fall I bought an Oliver plow that had sit for the last 20 years. I got it home and went to work cleaning and greasing it. I put a 4 inch wire wheel on my drill and took all the loose rust off the points, shines and molbords. I then took my DA with 80 grit sand paper to them to make them good and smooth, Blew them off with an air hose. I sprayed a heavy coats of primer on it to make them good and slick. 4 rounds and they were shined up. I would not use a grinder on them at all, If you have a sanding disk use that. You need to make them smooth. The primer will fill in small pits and stay slick till they get shined up. I have done this many times and it allways works. Could you post a picture of the points some we can see the shape of them? I hope this helps you. Bandit
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