| Author | Message | ||
     Roman Dubravsky Rating: N/A |
If lens are cemented by genuine canada balsam, their separation is easy. Put lens pair into water and get warm water slowly. When water temperature is 80-90 degree Celsius, canada balsam get melt and lenses are separateable. Rest of balsam you can clean by (pure) alcohol. For re-cementing you will need a little of canada balsam or synthetic optic cement. Warning - if lens is very old (50 years or more) is better to sign location of elements each other. Old lenses were hand assembled and position (turning) of two lenses in pair is important, it can have influence to optical quality. If elements are cemented by synthetic glue, it is problem. You can try to separate elements by xylen. You have to plunge lens pair into xylen for several hours. Attention, xylen is toxic! |