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Serious question, does anyone else think soaking old lens rings in lighter fluid is a mistake?
I keep seeing people say to dunk a stuck focus ring in lighter fluid and let it sit, and I think that is asking for trouble. Last month I had a Canon FD 50mm f1.4 come in from a guy in Portland who tried it, and the fluid had washed the grease into the aperture blades and dried them out so bad they would not snap back. I spent two hours cleaning that mess with a Q-tip and naphtha instead of just a 10 minute re-lube. What are you all using to free up a stiff helicoid without wrecking everything inside?
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stone.evan18d ago
Pouring lighter fluid in without pulling the glass first is the real problem, since it carries old grease straight onto the blades. Skip the fluid and use a drop of naphtha on the helicoid threads only, then work the ring back and forth.
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