Antique Tractor Paint and Bodywork |
Re: rust
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Posted by CNKS on February 08, 2007 at 08:09:38 from (204.249.178.32):
In Reply to: rust posted by 1941 farmall a boy on February 07, 2007 at 20:43:20:
The electrolysis process is probably ok, I haven't had much of a desire to use it, as I either wire wheel or sandblast the smaller items. On large items such as the gas tank, hood, and grille, I use a fiber wheel on an electric drill (3M corp, etc). It is slow, but it goes to bare, clean, metal, leaving no rust. It will leave rather deep scratches, which I then sand with 150-180, coat with epoxy primer, followed by a sandable surfacer. That takes care of the scratches. If all I have is paint, I strip it with chemical stripper, then sand any underlying rust off with 180. You don't have much choice on the engine and chassis but to use wire wheels on electric drills or angle grinders. Remove the baked on grease and old paint with a combination of oven cleaner and chemical stripper, pressure wash before and after, will probably take 2 or 3 applications. I think F.I.T. has a recipe for "lye gravy", which tends to make the lye (sodium hydroxide) remain on the surface longer without drying out, making the lye react longer. I sometimes use a rust converter such as Picklex 20 on the nooks and crannies that I can't get to.
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