Dad used mlybdenum disulphide grease on piston is the navy. Smear it on the
bore, then remove it all. Apparantly, its microscopic components are so
small it fitted in the steel of the bore. So the piston wouldn't sieze on
the first stroke.
Dunno about aperture blades though.
Foxy
----- Original Message -----
When I've rebuilt lenses I use dry molybdenum disulphide powder on the
diaphragm blades and actuating mechanism - no oil. Work it into the moving
parts then blow the excess out. Moly is also available in other carriers -
grease or a solvent-based carrier that evaporates after carrying the moly
into crooks and nannies.
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