Re-cementing lens

Discussion in 'Camera Building, Repairs & Modification' started by RobertoMiglioli, Jun 25, 2013.

  1. RobertoMiglioli

    RobertoMiglioli Member

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    Hello.

    I´v just re-cemented the front element of my Voigtländer Heliar 105/3.5 lens with Canadian Balsam. So far, so good.

    How long should I wait untill the balsam hardens enought so I can reassemble the lens? Does heat help?

    Thanks in advance.
     
  2. Tom1956

    Tom1956 Inactive

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    What method did you use to get it apart?
     
  3. RobertoMiglioli

    RobertoMiglioli Member

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    I boiled the lens. They separated in less than 3 minutes. Then I cleaned with isopropyl alcohol.

    It was much more easy than I thought it would be.
     
  4. Gerald C Koch

    Gerald C Koch Member

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    When I mounted microscope slides with this medium the recommended drying time was 2 weeks.
     
  5. Tom1956

    Tom1956 Inactive

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    I've done my share of research on this. Never actually did it yet, but all my research suggests at least 2 weeks if not a month.
     
  6. RobertoMiglioli

    RobertoMiglioli Member

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    Thanks.
     
  7. Jon Goodman

    Jon Goodman Member

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  8. EdSawyer

    EdSawyer Member

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    Why use balsam and not a more modern UV-curing cement?
     
  9. E. von Hoegh

    E. von Hoegh Member

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    Balsam is much easier to fix if you make a mistake. Some of the modern UV cements can be a nightmare to take apart. I recemented a lens with balsam I took directly from the tree - so it's free, too!:smile:
     
  10. RobertoMiglioli

    RobertoMiglioli Member

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    Hi Jon. I read your article before re-cement my lens and it helped a lot, thank you very much.
     
  11. RobertoMiglioli

    RobertoMiglioli Member

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    Hi Ed. Because if I do something wrong it will be easy to clean the balsam and redo the job. I don´t think it would be possible if I use modern UV-curing cement.
     
  12. RobertoMiglioli

    RobertoMiglioli Member

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    Last edited by a moderator: Jun 26, 2013
  13. Jon Goodman

    Jon Goodman Member

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    I am glad it was helpful, Roberto.
    Jon