Re: ATM Coating Stains

[Mel Bartels <mbartels@efn.org>]

I remember extensive conversations with George Montreith of Morvac,
before he died, where he talked about the difficulty of removing some
coatings.  He said that even two weeks in strong hydrocloric acid would
not do the trick, and sometimes, repolishing was the only option.

It's my opinion that coatings are never a 'given', and that one of the
questions that should be asked far more than it is, is simply, "Now,
someday, I will recoat, so how hard will it be to remove the coating you
are depositing for me?"

-- 
Clear skies, Mel Bartels    Programmer/Analyst, amateur astronomer
Eugene, Oregon, USA         homepage: http://www.efn.org/~mbartels
mailto:mbartels@efn.org     atm, atm-digest list-owner
Motorize A Dob: http://zebu.uoregon.edu/~mbartels/altaz/altaz.html