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Old 10th Sep 2017, 12:27 pm   #12
John M0GLN
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Join Date: Jan 2004
Location: Southport, Merseyside, UK.
Posts: 1,156
Default Re: Re-anodising heatsinks?

Quote:
Originally Posted by kalee20 View Post

I believe after dyeing, commercial anodising features a further electrolytic operation which hardens the oxide coating and makes it more dense. This is missing from the PW article. But I may be wrong on this. Hopefully someone will correct me!
The DIY process I used about 5 years ago required the freshly anodised article, whether natural colour or dyed, to be immersed in boiling distilled water for 30 minutes to harden it, the piece I anodised has been outside now for that period and looks as good as it did when made.

John
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