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  1. #1
    The Brave Descender High Fist Shin's Avatar
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    Home Brew Rust Remover - Molasses!

    I found this on the web and thought I'd pass it along. Might be a cheaper alternative to oxalic acid and other industrial rust removers. I'm going to try it out and post my findings in this thread.

    Check it out... http://www.wr6wr.com/newSite/article...06/wp0906.html

    Dante
    In life there are no mistakes, only lessons. -Shin

  2. #2
    Stop reading my posts! unworthy1's Avatar
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    "that's fantastic"! And thanks for the article: since we in C&V are always battling rust, it's always welcome to expand the arsenal. Molasses has got to be the most eco-friendly option yet, I'm going to try it out soon.

  3. #3
    Lanky Lass East Hill's Avatar
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    Most intriguing.

    Now to see if I have anything like that in the house. I think the closest I come is treacle .

    East Hill
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    Stop reading my posts! unworthy1's Avatar
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    most cooks will say treacle and dark molasses: same thing.
    YRMV

  5. #5
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    Hmm, I have a couple of cans of Lyle's Treacle Syrup left over from my homebrewing days. Wonder if rust on a British bike would prefer it?

    Neal

  6. #6
    I'm whats for dinner Versa2nr's Avatar
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    well I wonder how Cro-Mo would be affected as well. Might have to find a section from an old frame before going crazy on something I intend to keep.

    anyone got a kid going to the science fair this year??
    Quote Originally Posted by (51) View Post
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  7. #7
    Forum Admin lotek's Avatar
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    would I use Lyles Golden Syrup for light rust?

    sounds interesting, I would think of it as more of a Framesaver replacement.

    marty
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  8. #8
    Non Tribuo Anus Rodentum and off to the next adventure (RIP) Stacey's Avatar
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    Quote Originally Posted by article
    When I took the saw blade out of the solution, the copper had been stripped off the steel wire. So, there are probably some acids in the molasses that like copper or brass. I also tried an old brass key base in the molasses for about 12 hours. The bare brass had a copper color, which means the zinc has been removed from the brass. Test a throw-away piece before you try to de-rust a good piece just to make sure it won’t ruin something. More testing is needed on other metals to see how they react to the molasses.
    I'd be leary on a brazed frame.

  9. #9
    Lanky Lass East Hill's Avatar
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    Quote Originally Posted by unworthy1 View Post
    most cooks will say treacle and dark molasses: same thing.
    YRMV
    Only those who are not British!

    Lyle's Golden Syrup is not molasses... .

    East Hill
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  10. #10
    Forum Admin lotek's Avatar
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    Quote Originally Posted by East Hill View Post

    Lyle's Golden Syrup is not molasses... .

    East Hill
    It isn't? gee after all these years . . .

    (most seppo's have no clue what Lyles Golden Syrup is, poor buggers)


    marty
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  11. #11
    Stop reading my posts! unworthy1's Avatar
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    I learned the hard way from my British relations (relatives) about the sanctity of certain foods...don't you even dare to suggest that No. American Heinz baked beans are roughly the same as those in the UK can (with the light blue label)
    and BTW the Golden Syrups (Lyles and/or other brands) contain invert sugar and cane sugar syrup as well as light molasses...might work for a rust remover solution , but definitely will make for a sour, skunky flavored home brew (with a high alcohol level). beentheredonethat.
    Last edited by unworthy1; 12-29-07 at 11:59 AM.

  12. #12
    Lanky Lass East Hill's Avatar
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    Quote Originally Posted by lotek View Post
    It isn't? gee after all these years . . .

    (most seppo's have no clue what Lyles Golden Syrup is, poor buggers)


    marty
    Have a tin of it sitting in the kitchen right now .

    Quote Originally Posted by unworthy1 View Post
    I learned the hard way from my British relations (relatives) about the sanctity of certain foods...don't you even dare to suggest that No. American Heinz baked beans are roughly the same as those the UK can (with the light blue label)
    Mushy peas, anyone?

    East Hill
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  13. #13
    The Brave Descender High Fist Shin's Avatar
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    Update!

    The experiment is underway. I mixed up a batch of "Grandma's Molasses" in the correct ratio of 9 to 1 with hot tap water.
    I dropped into the mix a Suntour front derailleur, rear derailleur, a pair of steel pedals, and two cable stops. I'll let them soak for two days and report back with my findings.

    Dante

    P.S. Here are some before pictures of the derailleurs and the front brake cable stop...





    Last edited by High Fist Shin; 12-28-07 at 02:49 PM.
    In life there are no mistakes, only lessons. -Shin

  14. #14
    Nut infinityeye's Avatar
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    can't wait to see the result!

  15. #15
    can't member Noah Scape's Avatar
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    It may or may not remove the rust, but it will definitely improve the flavor!

  16. #16
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    Molasses cheaper than oxalic acid? I'm not too sure. Probably is safer....

  17. #17
    Ol' Paint
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    Has anyone considered making a paste with oxalic acid dust and molasses and "painting" it on rust spots on a frame that needs a little tlc? I have a frame with some nasty chain slap, but don't want to dismantle the whole thing for an oxalic bath. Worst case, a chemical combo would make a weapon of mass destruction (not likely, but think ammonia and bleach). Best case, I'd be able to remove rust only in a small selected area. Any thoughts?
    "In my cathedral,
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  18. #18
    Senior Member
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    To contemplate any of the above just bogggggles my mind!

    (ROTFLMAO)

    Regourds,
    J T

  19. #19
    Leather and Canvas Fetish
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    Quote Originally Posted by ticwanos View Post
    Has anyone considered making a paste with oxalic acid dust and molasses and "painting" it on rust spots on a frame that needs a little tlc? I have a frame with some nasty chain slap, but don't want to dismantle the whole thing for an oxalic bath. Worst case, a chemical combo would make a weapon of mass destruction (not likely, but think ammonia and bleach). Best case, I'd be able to remove rust only in a small selected area. Any thoughts?
    I tried making a thick paste of mostly Bar Keeper's Friend and a sprinkling of oxalic acid. I left it on for a half an hour. The chrome came out splotchy and mottled.

    Later, I made my usual weak solution of oxalic acid and water, soaked a strip of rag, wrapped it tightly around the rusted chrome dropout and sealed it with plastic wrap so it wouldn't evaporate. I repeated this a few times and it came out great.

  20. #20
    Leather and Canvas Fetish
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    Quote Originally Posted by jemoryl View Post
    Molasses cheaper than oxalic acid? I'm not too sure. Probably is safer....
    Yea, a small jar runs around $2-$3 here in SoCal! (My wife needs it to make her spice cake.) So FWIW, a tablespoon of oxalic acid in a gallon of water might end up being cheaper.

    I always thought molasses was the by-product of sugar?

  21. #21
    The Brave Descender High Fist Shin's Avatar
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    Quote Originally Posted by ronzorini View Post
    I always thought molasses was the by-product of sugar?
    You are correct.

    Molasses or treacle is a thick syrup by-product from the processing of the sugarcane or sugar beet into sugar. The sugar cane plant is harvested and stripped of its leaves. Its juice is extracted from the canes, usually by crushing or mashing. The juice is boiled to concentrate and promote the crystallization of the sugar.

    The results of this first boiling and removal of sugar crystal is first molasses, which has the highest sugar content because comparatively little sugar has been extracted from the juice.

    Second molasses is created from a second boiling and sugar extraction, and has a slight bitter tinge to its taste.

    Gotta love Wikipedia!
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  22. #22
    can't member Noah Scape's Avatar
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    I remember having sorghum molasses as a kid.

  23. #23
    My bikes became Vintage OLDYELLR's Avatar
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    Just to clear things up, North American molasses = British treacle. Sounds like a plan if you can't find oxalic acid. I had no luck finding any hardware store or building supply that knew wood bleach or oxalic acid, but finally located some on line at a taxidermy supply site. One word of caution: Be sure to degrease the parts thoroughly before trying rust removal solutions. Rust removers are not degreasers, so if the parts are oil soaked, you'll still have black spots of rust that remain. I found this using oxalic acid on a rusty steel crankset.
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  24. #24
    Senior Member mike's Avatar
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    So,,,

    Has anybody here actually tried molasses and can report the results? I am looking forward to Machin Shin's experience.
    Mike

  25. #25
    The Brave Descender High Fist Shin's Avatar
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    Quote Originally Posted by mike View Post
    So,,,

    Has anybody here actually tried molasses and can report the results? I am looking forward to Machin Shin's experience.
    UPDATE:

    The parts have been soaking for 36 hours so far. I'll check them tonight and write up a report this evening or tomorrow (with pictures of course).

    Keep your fingers crossed.

    Dante
    In life there are no mistakes, only lessons. -Shin

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