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Thread: Removing Cibie Bi-Iode Lenses

  1. 12-23-2022, 10:50 AM #1
    jaudette3
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    Removing Cibie Bi-Iode Lenses

    I have probably restored as many 170mm Cibie Bi-Iodes as anyone and I should be expert at this, but I am not. I've been successful a number of times and have experienced breakage a number of times. And of course these lenses are unobtainium.

    Name: Bitchin Cibies Front Pair 2.JPG Views: 173 Size: 147.3 KB

    I have tried a number of methods including:

    1. heating in the oven
    2. soaking in lacquer thinner
    3. endless patient scraping, cutting and prying with a variety of tools


    There are times when the lenses fell right off after removing them from the oven - and times when it looked like nothing had changed. Lacquer thinner didn't seem to have much effect. I haven't tried other solvents. Scraping, there's just no access.

    Has anyone come up with a fool-proof method of removing these lenses?

    Thanks and Merry Christmas,
    John
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  2. 12-25-2022, 08:45 AM #2
    Mark Morrissey
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    I know you used heat from an oven but did you try a heat gun? I would think a gun would give you more control.
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  3. 12-25-2022, 11:15 AM #3
    70SATMan
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    I’ve used an industrial heat gun on 118s but, gotta realize it smokes the plating and varnish on the reflectors. Even softened up, takes careful prying with A flat blade. I used hardwood clay forming tools re-shaped as chisels.
    Michael
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