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Re: Scale



Mach Fukada wrote:
> 
> My water quality people said there is an acid that will work on SiO2, but
> because glass is silica also you end up eating the glass....

Yep. Hydrofluoric acid will do it, but it is better to grind and polish as
the acid will not really make it smooth, again.

Wright

-- 
Wright Huntley -- 650 843-1240 -- 866 Clara Dr. Palo Alto CA 94303 
                    http://www.sfbaka.net.

   Instead of giving money to found colleges to promote
   learning, why don't they pass a constitutional amendment
   prohibiting anybody from learning anything? If it works as
   good as the Prohibition one did, why, in five years we would
   have the smartest race of people on earth. -- Will Rogers

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