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 Post subject: Polariscope top rotating filter is too stiff
PostPosted: Wed Oct 03, 2018 3:36 am 
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Location: London + Pakistan
Hi

I just bought a polariscope

It is very solid and well built but the top rotating polarising filter is very difficult to turn and stiff. If I push the rotating filter up from underneath, then it moves up and creates a bit of a gap where I can see some grease/lubricant. My guess is the grease is too thick.

What can I do to make it move more easily? I was thinking that maybe I could put spray some wd-40 into a bowl, and then use a toothpick to carefully apply that wd-40 into the little gap when I push the filter upwards. Would this be safe to do or could the filters/paint/equipment get damaged by the wd-40?

Or would it just loosen up by itself after many uses?

What should I do?

Thanks a lot


Last edited by Berullos on Fri Oct 05, 2018 9:42 am, edited 1 time in total.

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 Post subject: Re: Polariscope top rotating filter is too stiff
PostPosted: Wed Oct 03, 2018 10:59 am 
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Can you remove the filter? if so I would carefully clean off the dampening grease with a q tip and acetone.
If not then I would work the filter around a lot to try to loosen it up.

Jim


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 Post subject: Re: Polariscope top rotating filter is too stiff
PostPosted: Wed Oct 03, 2018 12:24 pm 
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I can't remove the filter. Well I probably could because if it was put on it can be taken off, but I don't want to risk it since I don't know what I'm doing. I think I could remove some of the grease with a toothpick and then hopefully it should loosen up with time I guess. Maybe it was made like this on purpose?


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 Post subject: Re: Polariscope top rotating filter is too stiff
PostPosted: Thu Oct 04, 2018 1:16 pm 
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a very carefully placed drop of mineral oil will soften up the grease. or two drops if one doesn't soften it enough.


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 Post subject: Re: Polariscope top rotating filter is too stiff
PostPosted: Fri Oct 05, 2018 8:16 am 
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Thanks


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