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Rust removal

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carl

05-30-2000 18:25:02




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I was at a shop recently that was using electrolysis to derust tooling. The liquid contained something beside water;but it was safe enough that the drain went directly into the city sewer. The guy told me the additive was cheap,safe,but I had to figure it out. Any ideas or thoughts?




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Alan K

05-31-2000 14:34:18




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 Re: rust removal in reply to carl, 05-30-2000 18:25:02  
Thought this might also be of interest. Taken from Stovebolt board

Has anyone ever soaked rusty parts in molasses? It works real good. Will not remove paint, but removes rust. Mix about 5 parts water to 1 part molasses and submerge your part for about 2 weeks. Can use a bucket, a kids size swimming pool, or anything else big enough to hold your parts. A friend of mine built a tank in the basement of his barn thats about 4'x8'x3' deep. Every so often a few of us pool some money and run up to the feed store to get enough molasses to fill it. Then we can dip fenders, doors etc. Works good, but not fast. If you want to experiment with this, get a bottle of molasses at the grocery store, mix with water in an ice cream bucket, and throw in a rusty part. Pull it out in a couple weeks and hose it off. Might want to keep the bucket outside, it will smell. Brian Moore Shop Shark posted 05-02-2000 04:32 PM

ok I just have to ask..... So Barry how much molasses and water does it take to fill an 8'x4'x3' box and how much does it cost????? Tony Shop Shark posted 05-02-2000 06:28 PM

Molasses?you are not fooling huh? I have used home made lye, I got to try it. Just throw the mixture in my field to dispose of it , right? I think molasses has sulfur or something similar in it.

[This message has been edited by Tony (edited 05-02-2000).] Barry Weeks Grand Pooh Bah posted 05-03-2000 10:55 AM

Try a small sample in a coffee can or something. Just use a bottle of molasses from the grocery store. Find a small,real rusty piece of sheetmetal to experiment with. Best to suspend it in the can from a wire so all parts get evenly soaked. Resist pulling it out everyday to look at it. Let me know in a couple weeks what you think. We talked to the county about disposal, they said O.K. to pour in the field.(farmers mix molasses in feed for hogs) I think molasses has a ton of sugar in it, so maybe this is similar to putting your part in Coca-Cola or something similar. It depends how big a tank,how good a deal you find on molasses,(check with a feed store) and how strong you mix it on what it will cost. My buddy's big tank runs about $300 to fill, but when 4-5 guys strip parts for all summer, that's cheap compared to commercial stripping. He made it that big to get some Model T touring and roadster bodies in. My Chev. truck parts were in the tank with these Ford parts, but don't worry, I didn't let them touch.

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TC

07-27-2000 08:05:51




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 Re: Re: rust removal in reply to Alan K, 05-31-2000 14:34:18  
a guy at work and I were talking about this and he said an old trick is to soak it in cider.



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Earl borchardt

06-01-2000 00:41:35




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 Re: Re: rust removal in reply to Alan K, 05-31-2000 14:34:18  
There is or was a product called "Wedak" for this. It contained phosphoric acid I have used it and it works well. Phosphoric acid is also the active ingredient in the product called Navel Jelly which is also for rust removal.



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big fred

05-31-2000 08:00:17




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 Re: rust removal in reply to carl, 05-30-2000 18:25:02  
washing soda or lye. If using lye, make sure to add the lye to the water, not the water to the lye. Also if using lye, wear gloves, as lye is caustic to your skin. You don't need much, do a Web search for electrolytic rust removal and you will find quite a bit of info.



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Steve U.S. Alloys

05-31-2000 05:41:33




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 Re: rust removal in reply to carl, 05-30-2000 18:25:02  
Hi Carl,
My guess is that the solution was Rassonil. Steve



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Matt Clark

06-20-2000 08:01:16




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 Re: Re: rust removal in reply to Steve U.S. Alloys, 05-31-2000 05:41:33  
Probably just TSP (trisidium Phosphate). I've used it for electolytic rust removal before (but can't really remember how much it took). Hooked it up to a cheap battery charger, and it worked great. You can buy it in powder form, and mix with water. Same as old time detergent, and relatively safe for sewer.



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