I don't know about cigar ash. Bon Ami is an excellent cleaning
abrasive as long as whatever you are cleaning is harder than
limestone. Bon Ami is made of powdered limestone, feldspar (I think)
and coconut shell. It works wonders on pot & pans leaving them mirror
bright so long as they weren't scratched to begin with. To polish
watches glasses, both mineral and plastic, I use Wenol metal polish.
Great stuff! I don't believe I would use either one on coated camera
lenses.
Charlie
On Thu, Feb 7, 2013 at 1:02 PM, Larry G. Griffin
<lggriffin@xxxxxxxxxxxxx> wrote:
> John is correct tobacco ash is a light abrasive. I worked for an
> Aerospace company there was an the 'old school' German optics tech
> there. Who said I could use cigar ash to polish the plastic crystal on
> my watch. IIRC I was advised to use the light grey ash as it had burned
> better, and less impurities. I have done that more than once
> successfully. Another abrasive that comes to mind is Bon Ami cleanser,
> not Ajax, Clorox, or any other. At one time Bon Ami was guaranteed not
> to scratch. I use Bon Ami to clean the road grime off my window shield
> with no ill effects.
> Larry
>
> John Hermanson wrote:
>
> I haven't had the time to try it yet, but I was advised that buffing the
> fogged 8mm element with cigarette ashes can remove fogging. This advice
> by way of a Leica repair group. I concur, a bad initial coating during
> creation.
>
> ___________________________________
> John Hermanson | CPS, Inc.
> 21 South Ln., Huntington NY 11743
> 631-424-2121 | [1]www.zuiko.com
> Olympus OM Service since 1977
> Gallery: [2]www.zuiko.com/album/index.html
>
> References
>
> 1. http://www.zuiko.com/
> 2. http://www.zuiko.com/album/index.html
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