hmmm, the thread you posted, CJ, says Oscar used a "dash of aluminum sulfate" and this thread says Oscar used a "very small amount of Magnesium dioxide"

Are there two Oscar forumlae or a misrememberance somewhere?

You see, I have this rifle sight that needs bluing and I have the possibility of obtaining some of the materials - if only I knew what they were.

Brent

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BrentD, (Professor - just for Stan)
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