[LargeFormat] multi coating

[Ken Hough]

Les, Read this slowly and with your glasses,
On a Dagor, Protar, T-R you have to didassemble the lens into its 10 
elements. THEN you coat the front and Rear element of each cell. Then re 
assemble. Coating is a HOT process and will melt the cement.
Ken

From:           	Les Newcomer <lnphoto@twmi.rr.com>
To:             	largeformat@f32.net
Subject:        	Re: [LargeFormat] multi coating
Send reply to:  	largeformat@f32.net
Date sent:      	Sun, 02 Dec 2001 20:01:40 -0800

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This is the confusing part.

I hear/read:

You can only do single elements, or recement multiples because  the
process ruins the cement.

The price is too high, you can't do any thing.


So Clive shows up with a TR that has FIVE elements in a cell and it's coated.

So somebody dissassembled and then recemented and recolated two five
element cells just to get a single coating?

Les

Clive Warren wrote:
> 
> At 10:33 pm -0600 1/12/01, Michael Briggs wrote:
> >
> >I have heard that decades ago, when single-coating was newly
> >introduced, it was fairly common to have existing lenses coated.
> 
> That might explain why I have a 4x5 Turner Reich convertible that has
> front and rear element single coating.  It is a fairly light blue
> coating, suffering slightly on the front element from some
> oxidisation but the rear is perfect.
> 
> This is the only Turner Reich that I have seen with coating - maybe
> Ken got to it :-)
> 
> Cheers,
>          Clive
> 
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        ******Ken Hough Photographic Repair******
         Specializing in Deardorff Refinishing
          Lens Recementing and Shutter repair
          Contribitor to McKeowns Price Guide
                   Deardorff Section
           Custom machined Photographic items
           Text Contents Copyright 1999 KHPR
          http://deardorffcameras.0catch.com/
                   Est. 1980