cleaning lens - metal flakes when putting back together

uniondale

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Nov 14, 2015

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35mm

• Nov 19, 2015

• #1

Hi, I cleaned a lens twice (Zeiss Flek) and both times, when putting it back together, metal flakes drop down into the internal elements when screwing the thing back together. Is there a way to prevent this? I cleaned around the rings and brushed the threads to no avail.

 

John Koehrer

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Apr 3, 2004

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Aurora, Il

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• Nov 19, 2015

• #2

I'm guessing aluminum/aluminum?
Try waxing the threads before reassembling them.
Rub the male thread against a candle or piece of paraffin/ski wax/floor wax. Some hard wax, not paste.

 

OP

OP

uniondale

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Nov 14, 2015

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35mm

• Nov 19, 2015

• #3

OK, thanks...sounds good to me.

 

AgX

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Apr 5, 2007

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• Nov 19, 2015

• #4

In case it really is the thread, than before using wax, polish the the thread with finest grinding paper. Sometimes the peak of a threading is a bit rough.