Series 5 lens ring stuck on Kodak Stereo

[<jarrow@xxxxxxx>]

Thanks to everyone who suggested ideas on how to unstick a series 5 filter retaining ring on my 
Kodak Stereo. Both rings appear to have been in place for something like 40 years and would not 
budge.
        Most solutions offered used ice to mechanically loosen the ring - I liked the idea but 
was not so sure about the problems associated with the ice melting and water getting a little 
too close to the lens mount for comfort. What I did come up with was based on the same 
principle. 

        A British company called Electrolube makes a spray freeze product for the electronics 
industry. I have used it many times for determining thermal problems in electronic components 
but found it particularly useful in this case. By shielding the lens and wrapping the lens 
barrel with cloth I could then selectively freeze sections of the knurled section of the barrel 
without damaging anything else. After 5 squirts of spray freeze the outer section of the lens 
barrel was white cold. A gentle turn of the retaining ring was all that was required - all is 
joy.

        I've asked Dalia to send out a set of series 5 UV filters - now that I have something to 
retain them.


John Arrowsmith
Australia


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