Mizter T wrote:

Acid etching is a form of graffiti that has started to show up in the
Lower Mainland. It is graffiti that is marked on glass or plexiglass

The only sort of acid that can etch glass in any reasonable time is
hydrofluoric. If it is acid they're using and they're not just
scratching the glass then one can only hope they spill this extremely
nasty substance on themselves at some point and end up in intensive
care or dead.

http://en.wikipedia.org/wiki/Hydrofluoric_acid

B2003