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Singlespeed & Fixed Gear "I still feel that variable gears are only for people over forty-five. Isn't it better to triumph by the strength of your muscles than by the artifice of a derailer? We are getting soft...As for me, give me a fixed gear!"-- Henri Desgrange (31 January 1865 - 16 August 1940)

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Old 07-25-09, 06:45 PM   #1
deathhare
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Drano polishing

Anyone actually tried this Drano swimming?
If so, how well did it work?

http://www.munichfixed.de/?p=1077
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Old 07-25-09, 10:13 PM   #2
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All I can say is be careful with Drano, that is some nasty stuff!
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Old 07-25-09, 10:33 PM   #3
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drano contains sodium hydroxide which is the same as what oven-cleaner contains.

instead of an inflatable pool, you can use drainage tubing from a hardware store. probably cheaper. or just your bathtub.
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Old 07-26-09, 08:17 AM   #4
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the NaOH removes the anodization chemically, leaving you with bare aluminum without a bunch of sanding and scratching. very convenient and works well.

however, the resulting finish is quite dull until you hit it with some elbow grease / metal polish (i recommend a buffing wheel on a drill). and even then, the finish is still bare (ie: no longer protected by ano) metal. it will tarnish fairly quickly and require ongoing polish to keep looking mirror like.
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Old 07-26-09, 04:36 PM   #5
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Ah... so on something that is not anodized it will have no effect.
In that case, thats the dumbest DIY ive ever seen.

People have been removing anodization from bike parts using oven cleaner for 20 years.
Seriously, I remember it that long ago.

Last edited by deathhare; 07-26-09 at 06:45 PM.
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Old 07-26-09, 06:15 PM   #6
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iirc, you use gasket remover for powdercoated parts
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Old 07-26-09, 07:57 PM   #7
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1) there is clear ano, which NaOH will remove, allowing you to polish the bare metal to a much higher sheen than unmolested clear ano.

2) NaOH (lye) is nasty stuff, as has been previously pointed out. i'm sure it will remove pretty much anything you let it sit on (paint, powdercoat).
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Old 07-27-09, 06:02 AM   #8
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http://babelfish.yahoo.com/translate...rUrl=Translate

Translated. I don't speak too many white people languages. Jus' kidding.

Just curious, can surface be good for anodization? I wanna polish my stem you see?
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Old 07-27-09, 12:37 PM   #9
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The kiddie pool was only to accomodate the size of the rim. Some one in the DIY thread went through an explanation awhile back using just a bucket. It was for a scratched up stem. You can take off the anodizing and polish parts just with a table mounted grinder equipped with a polishing wheel and some polish that applies directly to the polishing wheel. Again, you are going to have to continue to re polish it. So good luck to that guy who stripped the anodizing off his wheels.

FYI, that spot on your cranks where you straps rubs, leaving the crank look different than the rest of it, that's stripping the anodizing off too.

NverDull works to clean up parts and give them a bit of a shine without stripping the anodizing off.
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Old 07-27-09, 03:39 PM   #10
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NverDull works to clean up parts and give them a bit of a shine without stripping the anodizing off.
It also smells strongly of mineral spirits, so use it outside if you don't want the wife to get mad at you.
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Old 07-27-09, 03:45 PM   #11
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How strong is Draino? I would assume you are loosing some parent material when you leave it sitting in the solution that long... Also, you would need to really, really clean it up and neutralize (especially on deep rims with double walls).
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Old 07-27-09, 03:47 PM   #12
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Yeah seriously.
**** probably eats tires/tubes as a snack.
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Old 07-27-09, 04:07 PM   #13
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my attempt at riding that site made it clear that I learned nothing from 2 years of college german.
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Old 07-27-09, 04:34 PM   #14
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my attempt at riding that site made it clear that I learned nothing from 2 years of college german.
And your English?
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Old 07-27-09, 05:16 PM   #15
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How strong is Draino? I would assume you are loosing some parent material when you leave it sitting in the solution that long... Also, you would need to really, really clean it up and neutralize (especially on deep rims with double walls).
when using lye to strip anodize off aluminum, you only want to leave it on for 10 mins or so. any longer and pitting will occur.

one trick with a aluminum stem or seatpost stuck in a steel frame is too keep the area soaked in lye for a few days. it will eat the aluminum completely but not affect the steel.
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Old 07-27-09, 05:48 PM   #16
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why use drano vs jasco, which is made for the application?
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Old 07-27-09, 05:54 PM   #17
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How strong is Draino? I would assume you are loosing some parent material when you leave it sitting in the solution that long... Also, you would need to really, really clean it up and neutralize (especially on deep rims with double walls).
Yes. It's very strong. Oven cleaner / lye have the same active ingredient. You are right, it does take some parent material with it. If you leave it on too long it will take a lot. I used EZ-Off oven cleaner to remove the anodized finish from a chainring. I left it on too long and ended up with severe pitting of the alloy.
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Old 07-27-09, 05:54 PM   #18
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this stuff is the best: http://www.jestcoproducts.com/index....d&productId=20
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Old 07-27-09, 07:35 PM   #19
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1) there is clear ano, which NaOH will remove, allowing you to polish the bare metal to a much higher sheen than unmolested clear ano.

2) NaOH (lye) is nasty stuff, as has been previously pointed out. i'm sure it will remove pretty much anything you let it sit on (paint, powdercoat).
Thanks for stating that. I almost over-looked the idea of stripping clear-ano... which I had done previously with a high speed polishing bit. NOT fun, took forever, and lots of bits. Hence one polished crank and one still the foggy clear ano. Wish I had never started... hit it with a polishing bit before I realized it was cleared
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Old 07-27-09, 07:46 PM   #20
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Yeah seriously.
**** probably eats tires/tubes as a snack.
meh. i applied it with my hands and didnt get the least bit burned. jasco's on the other hand burns like a mofo.

anyone know what kind of "paint" is on a stock motomess wheelset? i couldnt find a chemical that would strip it
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