Re: [ATM] Coating not Adhering on Glass

[johncdeitz@comcast.net]

How about cleaning responsibities when sending in an older mirror for recoating?
John
 -------------- Original message ----------------------
From: "Vladimir Galogaza" <vladimir.galogaza1@zg.t-com.hr>
> > I use Kleenex with acetone and methyl alcohol for final wipe.
> 
> Wiping a glass for cleaning purpose is generally not a good idea.
> There is inherent risk of scratches by occasional dust of abrasive matter.
> Final "wipe" with volatiles like acetone or alcohols (methanol is
> poisonous by the way), is very inefficient because after wipe, thin layer
> of solvent remains and evaporates quickly leaving dissolved stuff on the 
> glass.
> Best final wash is water, distilled or deionized, poured on the inclined 
> glass.
> Clean glass will let water run off and few remaining droplets should be 
> blown
> away. No wiping necessary if glass was clean. If water sticks, this is sign
> of insufficient cleaning.
> First cleaning is best done underwater with little of  neutral detergent and 
> light touch
> of cotton previously inspected for presence of foreign hard inclusions( eg, 
> wood).
> Breath test mentioned by Peter is efficient and simple way of detecting 
> unclean areas.
> 
> 
> Regards
> Vladimir.
> 
> 
> 
> 
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