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If you’ve ever wanted to experiment with aluminum anodizing but were put off by the conventional requirement for concentrated sulfuric acid, you will be very interested to read of Ken’s successes with an alternate process using the acidic sodium salt of sulfuric acid. This salt, sodium bisulfate (NaHSO4) is much safer to transport, handle, and dispose of than the strong acid, and appears to give anodizing results that are just as good or better. It is widely available as a pool chemical. [via Hack a Day]

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Sean Michael Ragan

I am descended from 5,000 generations of tool-using primates. Also, I went to college and stuff. I write for MAKE, serve as Technical Editor for MAKE magazine, and develop original DIY content for Make: Projects.


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