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 Post subject: Re: Removing Anodising
PostPosted: Wed Jul 17, 2013 9:06 pm 
rBoTM Winner
rBoTM Winner
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Joined: Tue Mar 27, 2012 9:28 pm
Posts: 3104
Location: Mansfield Woodhouse, Nott's.
Well Lye Never so its caustic soda......


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 Post subject: Re: Removing Anodising
PostPosted: Fri Jul 19, 2013 7:36 am 
Old School Grand Master
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Joined: Sat Oct 06, 2012 5:17 pm
Posts: 3775
Location: Norn Iron
This site always amazes - when was the last time i read the word 'exothermic'????????? Sooooooooo long ago.

Thanks for giving me a 32 year old memory of chemistry class with Walter Cameron and his flying chalk!!!!

Richard

p.s. i have oven cleaner at the ready!!!!


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 Post subject: Re: Removing Anodising
PostPosted: Fri Jul 19, 2013 7:37 am 
Retro Guru
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Joined: Thu Nov 01, 2012 3:09 pm
Posts: 542
Location: Rotterdam
Let us know how the oven cleaner turned out and which one you used.


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 Post subject: Re: Removing Anodising
PostPosted: Fri Jul 19, 2013 7:42 am 
Old School Grand Master
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Joined: Sat Oct 06, 2012 5:17 pm
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Location: Norn Iron
Will do, there is an excellent thread about this written by Kettlo but i could not find it - maybe someone who can work the search function could provide the link (again!).

Richard


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 Post subject: Re: Removing Anodising
PostPosted: Fri Jul 19, 2013 9:15 am 
Old School Grand Master
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Joined: Sat Oct 06, 2012 5:17 pm
Posts: 3775
Location: Norn Iron
Morning all,

Disregard above - i found the link after a bit of head scratching -

viewtopic.php?f=12&t=253317

Kettlo (Stephen) - thanks very much.

Richard


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 Post subject: Re: Removing Anodising
PostPosted: Fri Jul 19, 2013 9:30 am 
Dirt Disciple

Joined: Mon Jul 05, 2010 8:23 pm
Posts: 49
Hey SWijland, have you tried the HG Oven Cleaner they sell at Praxis in The Netherlands? I've used it in the past with decent results... Seems to be lighter in lye content compared to Easy Off so it takes more patience, but in the end did deliver.


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 Post subject: Re: Removing Anodising
PostPosted: Fri Jul 19, 2013 12:58 pm 
Retro Guru
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Joined: Thu Nov 01, 2012 3:09 pm
Posts: 542
Location: Rotterdam
Will try that. Thought you needed something with lye in it to do the trick, but would be happy to try something else.


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 Post subject: Re: Removing Anodising
PostPosted: Fri Jul 19, 2013 1:59 pm 
Dirt Disciple

Joined: Mon Jul 05, 2010 8:23 pm
Posts: 49
I figured I'd just give HG a try on an old campy crank with a crack in it because it was the only instant gratification solution I had at hand... soaked it for 10-15 minutes, but didn't expect it to turn black (freaked me out at first). But no worries, it rinsed off with some lukewarm water & soap. After that I was able to clearly see where the anodized layer had been removed, which made subsequent sanding/polishing a cinch.


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 Post subject: Re: Removing Anodising
PostPosted: Fri Jul 19, 2013 2:03 pm 
rBoTM Winner
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Joined: Tue Mar 27, 2012 9:28 pm
Posts: 3104
Location: Mansfield Woodhouse, Nott's.
DaveB1 wrote:
soaked it for 10-15 minutes, but didn't expect it to turn black (freaked me out at first). But no worries, it rinsed off with some lukewarm water & soap.

Leave it any longer and the black turns into a hard carbon like substance and then its a swine to get off!

You need to keep an eye the stuff, an old stiff toothbrush will help get into any names/lines etc.


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