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Old 08-10-15, 15:04
chris vickery's Avatar
chris vickery chris vickery is offline
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So Rick, for the molassess bath, a thorough degrease is in order prior to immersion into the bath for best results?
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Old 09-10-15, 02:39
Andrew H. Andrew H. is offline
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If you remove any grease beforehand the molasses will work better. At least that has been my experience. I use a 6:1 ratio of water to molasses and if left for about 10 days it gives the excellent results achieved by Lynx42 above. A high pressure water-blaster (mine is 2000psi) is best for cleaning the black gunk off afterwards. However with my gearbox cogs there is still an unacceptable amount of residue that I now need to remove by some other method.

It is surprising how, sometimes the de-rusted steel does not start rusting again immediately after the molasses treatment, while other times it gets an orange "rust bloom" almost straight away. I suppose it might depend on the humidity of the air. I sometimes use a blow-torch afterwards to speed up the drying process and avoid further rusting. Its amazing to me that the molasses method is not more popular, as it does an excellent job, is very cheap, easy, biodegradable, non-toxic and (if you are in a rural setting) easy to dispose of afterwards. As far as I can see there is no down-side to molasses, as long as you plan ahead and are not in a hurry.
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Old 09-10-15, 09:36
lynx42 lynx42 is offline
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Quote:
Originally Posted by chris vickery View Post
So Rick, for the molassess bath, a thorough degrease is in order prior to immersion into the bath for best results?
Chris, If you use a degreaser the molasses won't work. Just scrape of the excess grease but don't spread it as the solution won't work where the degreaser or grease was. There won't be any rust under the oil or grease and you can put the item in the molasses with the grease on it and clean it off later.

Regards Rick.
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Last edited by lynx42; 09-10-15 at 10:10.
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