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I finally got a stuck focusing ring on a Pentax K1000 to move after trying something dumb
This thing was frozen solid, wouldn't budge with normal force. I was about to start taking the whole lens apart, but on a whim I tried a tiny bit of lighter fluid on a cotton swab right at the seam between the ring and the barrel. Let it sit for maybe ten minutes, then gently tapped the ring with a plastic spudger handle. It creaked and started turning. Has anyone else had luck with a weird solvent like that on old, gummed-up grease?
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rubybarnes6mo ago
What kind of lighter fluid did you use, the regular Ronsonol type?
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jamiekim6mo ago
Stick with the Ronsonol if you want a clean burn. The cheap stuff leaves a nasty residue that gums up the works. It's worth the extra dollar for less hassle later.
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