On Tuesday, January 21, 2014 3:47:27 AM UTC-8, Lloyd E. Sponenburgh wrote:
"PrecisionmachinisT" fired this volley

in :



Spray on oven cleaner removes it in seconds.
....won't hurt

steel/iron. Eats hell out of Al, but then, so does TSP.

I've used TSP on aluminum, without problems. Lye, and washing soda
(OxyClean and such) are the aluminum (and aluminum/zinc alloy) molesters.