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Deanodizing aluminum parts

Discussion in 'Chassis & Drivetrain' started by joostin420, Apr 8, 2018.

  1. joostin420

    joostin420 Well-Known Member

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    Caustic soda (lye) method to deanodize aluminum parts works awesome! It is fast and only takes a couple of minutes.

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  2. WoodiE

    WoodiE Kind of good admin
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    Did you polish them after you de-anodized them?
     
  3. joostin420

    joostin420 Well-Known Member

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    Have not polished them yet. Forgot to pick up some mothers auto polish paste or something like that while I was at Walmart earlier. I did try some steel wool on a section and it does look good.
     
  4. Pickles

    Pickles Well-Known Member

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    This looks awesome, does it damage the surface of the aluminium at all? Did the green just wash off afterwards
     
  5. joostin420

    joostin420 Well-Known Member

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    Does not appear to do any damage. I made sure to keep an eye on it while the lye was doing it’s thing.

    The color started to come off by itself just moving the parts around in the solution within seconds. Placed parts in bucket of clean water and rinsed and dried after. Just need to polish them a bit now.
     
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  6. Pickles

    Pickles Well-Known Member

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    Thanks, I'm actually thinking about trying one of the home anodising kits you can get an ebay and re-anodising the red parts on the Kraton a different colour, plus anodising some GKA parts at the same time.
     
  7. crman1964

    crman1964 Well-Known Member

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    20180408_214410.jpg View attachment 17781 Hi guys, just spent the last week the de-anodizing the aluminum parts on my Kraton and polishing so wanted to give you a pic. 20180408_214333.jpg
     
  8. Pickles

    Pickles Well-Known Member

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    Looking really nice!
     
  9. Steve Brx

    Steve Brx Active Member

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    Hi, thanks for the posts as I want to do the same with my Talion. I noticed from your post Joostin420 that the bucket has a what looked like part of a wire coat hanger going into the solution. I this to act as some kind of catalyst or was it simply there to hold all your parts together and allow you to fish them out of the solution?

    Also, what grade of Caustic soda are you using? I noticed this 99% powder on Amazon, would that do it?

    https://www.amazon.co.uk/Caustic-Dr...8&qid=1523538730&sr=8-3&keywords=caustic+soda

    Many thanks
     
  10. joostin420

    joostin420 Well-Known Member

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    The coat hanger was only used for dropping and removal of the parts. I also used it to hold the 16 little aluminum shock mount retainers that were also green anodized while in the caustic soda solution. These are xmaxx parts.

    I believe I purchased the caustic soda (lye) at Home Depot in the plumbing section. It is drain cleaner crystals and on the label says “100% lye”
     
  11. Steve Brx

    Steve Brx Active Member

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    Oh I see, yes of course, very easy to lose those shock mount retainers I would imagine! Thanks very much for taking the time to reply, I'll push ahead and give it a go before giving everything a decent polish with my mop and drill.

    Thanks again for your help.
     
  12. joostin420

    joostin420 Well-Known Member

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    Spend a few hours polishing
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  13. Iamtheoutcast

    Iamtheoutcast Well-Known Member

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    Its sodium hydroxide robric brand I do believe
     
  14. joostin420

    joostin420 Well-Known Member

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  15. Iamtheoutcast

    Iamtheoutcast Well-Known Member

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    I have a chemistry background that's how I knew just by looking at the color of the bottle lol

    Did they make u show ur I.d to get it
     
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  16. joostin420

    joostin420 Well-Known Member

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    No ID; I still had a full beard when I purchased :D
     
  17. Iamtheoutcast

    Iamtheoutcast Well-Known Member

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  18. Iamtheoutcast

    Iamtheoutcast Well-Known Member

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    It's a main precursor in the manufacture of illegal drugs

    A lot of big box department stores will make you show your I'd if you look on the back it will say the only active ingredient is sodium hydroxide
     
  19. Steve Brx

    Steve Brx Active Member

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    They look amazing, worthy of the work. I have done the same with a few restored X-Ray T1 touring cars; I'll post some pictures if I can find them. Carbon also polishes really nicely. I assume you're going to protect them? Carnauba wax works really well.
     
  20. joostin420

    joostin420 Well-Known Member

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    Post pics if you can of the X-rays . Yes, going to try and pick up wax this weekend.
     
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