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Cross threaded lens' filter threads
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<blockquote data-quote="nickt" data-source="post: 639539" data-attributes="member: 4923"><p>Can you see damage? Use a light and magnifier to inspect the threads. If no bent threads, maybe there is just some crap in the threads. Try pinching a cleaning cloth into the threads. 'Chase' the threads, meaning keeping it in contact as you loop around and around. Work counter clockwise so that any gunk is pushed away from the glass and towards the outside as you follow the threads around. If you have any Eclipse cleaning fluid, I would put the tiniest drop on the cloth. Just a enough to give some moisture without any chance of some leaking into the lens. I've had success cleaning and even repairing fine threads like that with a modified dental pick but I wouldn't recommend that unless you were 100% confident that you could pull it off without damage.</p><p>Work on that fine touch that Needa described. If you have a junk filter, gently screw it on and off a few times and clean both male and female threads as above each time. You might be able to loosen things up.</p></blockquote><p></p>
[QUOTE="nickt, post: 639539, member: 4923"] Can you see damage? Use a light and magnifier to inspect the threads. If no bent threads, maybe there is just some crap in the threads. Try pinching a cleaning cloth into the threads. 'Chase' the threads, meaning keeping it in contact as you loop around and around. Work counter clockwise so that any gunk is pushed away from the glass and towards the outside as you follow the threads around. If you have any Eclipse cleaning fluid, I would put the tiniest drop on the cloth. Just a enough to give some moisture without any chance of some leaking into the lens. I've had success cleaning and even repairing fine threads like that with a modified dental pick but I wouldn't recommend that unless you were 100% confident that you could pull it off without damage. Work on that fine touch that Needa described. If you have a junk filter, gently screw it on and off a few times and clean both male and female threads as above each time. You might be able to loosen things up. [/QUOTE]
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