On Fri, 4 May 2007 16:02:30 -0700, charlie wrote:
wrote in message
ups.com...
Have you thought about using hydrofluoric acid instead?
have you ever read the msds on HF? there aren't too many things more
dangerous than this.

http://www.jtbaker.com/msds/englishhtml/H3994.htm

Yup.

this would be just a bad idea, besides the fact that it would be pretty hard
to source the HF.

Nope.

Most grocery or department stores in cleaning products.

http://www.whink.com/rust_stain_remover.htm

Granted, it is a dilute solution, but if you leave it on glass you will
cut it, eventually. With minimal contact time, it also works well
removing some hard water deposits on glass when regular lime removers
fail.

sdb

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