12 Apr
2011
12 Apr
'11
11:54 a.m.
Soemthing else that I have discovered the bad way is
that focussing
screens, which are often made of plastic, do *not* like alcohol. They go
all foggy and are permanently ruined.
Indeed. Actually, I think that some of my cameras are old enough to have
ground glass focussing screens.
The reflex mirror is, of course, front-silvered. Alcohol shouldn't attack
it, but rubbing it will. Anoterh part that it's best to remove if possible.
It's perhaps worth mentioningthat a lot of
small gear trains, in
particualr clocks and watches, but also chutter times, etc, are
supposed
to run with the teeth _dry_, no oil. Yes, you put a drop on each
pivot,
but nowhre else.
The self-timer on my Pontiac Baby Lynx camera had started sticking
after many years of disuse. Some lighter fluid cured that nicely. I did
put a drop of oil on the axles of the gears and AFAIK it still works.