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Thread: Polishing

  1. #1
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    New question here. Polishing

    Hey everybody,
    I want to polish my cranks, Im not looking for a chrome polish just a silver, just to take off that layer of black. So I need some information on what you guys have done to do this, or some ideas.

    Thanks
    2008 DHR
    2007 STP

  2. #2
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    dremel?

  3. #3
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    If they are anodized cranks you can use oven cleaner (easy off) - just be careful not to get that stuff all over the place as it is nasty.

  4. #4
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    Are you trying to get the shine back or do you want to remove the anodized layer? If you're just trying to buff up some silver cranks I'd use some steel wool to get the surface smooth then use a metal polish to get some shine. I've been Simichrome or Blue Magic. Both are basically the same, soft gritty paste with ammonia. Use a soft cotton rag to polish, like terry cloth.
    Desert Sunset Calls/Upward, Pain, Perseverance/Welcome Solitude

  5. #5
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    Thanks for the replies

    I am trying to get the black anodized layer off to show the silver. Would the oven cleaner take that black anodized layer off?
    2008 DHR
    2007 STP

  6. #6
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    It'll do it but you may have to do it more than once to get it all off. The ano. on cranks is usually pretty tough.
    Desert Sunset Calls/Upward, Pain, Perseverance/Welcome Solitude

  7. #7
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    should i start with a fine sandpaper to get it started mabye? or just go straight to the oven cleaner?

    Thanks
    2008 DHR
    2007 STP

  8. #8
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    No good Oven Cleaner

    I need some more advice
    IMG]https://i511.photobucket.com/albums/s360/solarimtb/100_0535.jpg[/IMG]
    if you can see the little white dots it looks like thats the metal so i stopped
    2008 DHR
    2007 STP

  9. #9
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    Try again on the first pic

    i need some more advice on how to do this the right way
    2008 DHR
    2007 STP

  10. #10
    rd3
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    try some sand paper now, 120 then 320. then some steelwool with water or polish

  11. #11
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    yeah start sanding.

    How long was the oven cleaner on? Why does it look more black by the BB side?

  12. #12
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    Good job! Victory

    I found some 400 grit sandpaper and did work

    Now i need some polish to give it a little shine, not a mirror but a shine
    2008 DHR
    2007 STP

  13. #13
    rd3
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    Now use steelwool or a scotchbrite pad to give it as much shine as you want. Use polish or water as lube. imo they look better polished than black, u don't see wear this way.

  14. #14
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    yea i agree they get wear on the black anyway so i thought id make it look clean>

    Thanks for the help
    2008 DHR
    2007 STP

  15. #15
    StraightOuttaCompton
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    nice.
    HARDTAIL PRIDE- 09 Kona Five-0

  16. #16
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    Bit of mothers on that and it will come up a treat

  17. #17
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    Quote Originally Posted by rd3
    Now use steelwool or a scotchbrite pad to give it as much shine as you want. Use polish or water as lube. imo they look better polished than black, u don't see wear this way.
    Actually, they wear even quicker when polished. The aluminum is quite soft, so it scratches more easily than painted/anodised.
    I polished mine (XTs) last winter and have had to polish them again many times to keep em looking decent....

    Retarded!

  18. #18
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    I know I'm late on replying, but since this question gets asked every month...
    Cranks are ano'd using Type 3 Anodizing aka "hard anodized". It's put into an acid that erodes (wears) .0001 (if I remember correctly) or 1/10,000 of an inch and then corrodes (builds) back the same ammount. Keep in mind a human hair is .003 or 3/1000 thick. The corrosion then can except dyes. Type 3 will look "milky" with most colors besides clear or black. Type 2 is what is also considered "decorative anodizing" because of the color choices being endless. Type 2 is thinner on both eroding and corroding. It only wears down 0.30 - 1.0 mil.. For most people to comprehend that it's between 1/3 and 1 millionth of an inch. This is why oven cleaner doesn't remove type 3 as easy as type 2.

    Anyway, some usless info for those wondering. Fahn
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  19. #19
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    thx for the info, if I leave it raw as in the picture above, will i need to keep doing something to it to keep it looking good? so if i dont start to polish it then i wont have to polish it in the future?
    2008 DHR
    2007 STP

  20. #20
    BH1
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    http://www.nevrdull.com/

    Been using this stuff for years.

  21. #21
    Gold it's the new Pink!
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    Never dull is a great product but it does not polish as well as a true polishing compound. If you want a chrome like shine Mother's Alluminum Polishing compound is the best out there!! I actually like to use Never Dull before the Mother's.

    BTW- The bubbling is totally normal for using Oven Cleaner. That is how you get thorugh the anodizing then you polish or sand off what is left behind. It looks harsh but its not a big deal at all.

    Crimson

  22. #22
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    started the other one today. I think that i might just keep them the raw like the above pic. If I do, will the rub from my shoes make it shine and then the other parts will still be the raw?

    thanks for all the help
    2008 DHR
    2007 STP

  23. #23
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    nicely done.

  24. #24
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    +1 for the Mothers polish. A couple coats of that and you have a mirror finish.
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  25. #25
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    A Simple method for stripping ano - more effectively than "oven cleaner"

    Sodium Hydroxide also known as "Lye" is sold at Lowes as a Drain Cleaner.

    1 container (2 lbs) will strip 100's of cranks, but a simple mixture for effective (but not overly effective) ano-stripping is 5 table spoons of Lye to 1 gallon of hot faucet water.

    5 Table spoons will strip most ano, add 1 or 2 more if it's taking too long.

    Things to note with working with lye - it's the basic opposite of sulfuric acid, so use proper chemically resistant gloves as it loves to dissolve organic matter (poo in the case of drain cleaner). Basically treat it with respect, and don't get any in your eyes, that would just about blind you in the solution form, and definately do damage. Read up on the MSDS if you want to be properly cautious.

  26. #26
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    +1 for oven cleaner. I left it on my cranks for about 5 minutes and 95% wiped right off! The rest I just sanded.
    Quote Originally Posted by Demo-9
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