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On Wednesday, March 8, 2017 at 2:38:15 PM UTC-5, rangerssuck wrote:
I just pulled a piece of aluminum out of my scrap stock bucket that
was particularly filthy. Dried up oil & dirt.

Sitting on my desk is a bottle of stuff that I mixed up to unclog an
inkjet printer. I figured what the hell, it's better than nothing,
and gave it a try. It worked great, and I'm thinking this could be
my new go-to every day cleaner. It's super cheap to make:

1 part household ammonia
1 part 91% isopropyl alcohol
3 parts distilled water

Just thought I'd share.

Just don't let the ammonia sit on aluminum for long periods of time.
Rinse it off. It's alkaline and it will eat aluminum.

--
Ed Huntress
=========
https://en.wikipedia.org/wiki/Season_cracking

-jsw