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August
Tinkerer
Username: August
Post Number: 41
Registered: 06-2008
Rating: N/A
Votes: 0 (Vote!) | | Posted on Tuesday, August 24, 2010 - 08:33 am: | 
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I have just finished a lens repair but some Ronsonol got onto internal elements in parts of the lens that I did not open up, and am not anxious to. It is taking a long time (i.e. weeks) for the internal Ronsonol to evaporate. Anyone have ideas how to speed this process? Maybe bake the lens at 150 degrees or so for a few hours, or even just leave it in the sun? Spin it around to use centrifugal force to spread the droplets? Any tips welcome. |
Greyscale
Tinkerer
Username: Greyscale
Post Number: 16
Registered: 07-2010
Rating: N/A
Votes: 0 (Vote!) | | Posted on Tuesday, August 24, 2010 - 03:25 pm: |
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It needs air to be able to reach it in order to evaporate. My bet is that you will have to open it up. Or at least open the part that you opened before and sit it in front of a fan or something, in order to increase the airflow. |
Mareklew
Tinkerer
Username: Mareklew
Post Number: 173
Registered: 03-2010
Rating: N/A
Votes: 0 (Vote!) | | Posted on Tuesday, August 24, 2010 - 04:15 pm: |
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How do you tell it hasn't evaporated yet?
No, it isn't a trick question.
Marek |
Will_inoue
Tinkerer
Username: Will_inoue
Post Number: 28
Registered: 06-2007
Rating: N/A
Votes: 0 (Vote!) | | Posted on Tuesday, August 24, 2010 - 05:05 pm: |
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You will have to separate the lens and let the naptha evaporate. You'll find the naptha will have left spotting or haze behind anyway which will need to be wiped off the elements.
BTW, be careful heating up the lens as often times one element in the group is cemented together. This bond can be damaged with too much heat. |
