At 21:20 04/27/1997 +0000, you wrote:
>The acid that you are referring to is commonly called HF to people
>that use or are around it regularly. It's full name is hyroflouric
>acid. There's no doubt it will clean the aluminum, but it will also
>clean your flesh to the bone literally.
Aluminum Oxide also forms the Emerald (nickel impurities) and Ruby (chrome
impurities) precious stones. As you might surmise, these are very hard.
Your skin isn't and HF not only causes burns but the pain associated with
the burn is worse than burns from a fire. I worked with HF for years and
developed a VERY healthy respect for it. Fortunately I was never burned but
some of my co-workers were not so lucky!
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