Excellent info, thanks for your help.
_________________________________
John Hermanson www.zuiko.com
Camtech, Olympus Sales & Service since 1977
21 South Lane, Huntington NY 11743-4714
631-424-2121 For Free Olympus manuals,
please call 1-800-221-3000
_________________________________
----- Original Message -----
From: "Joe Gwinn" <joegwinn@xxxxxxxxx>
To: <olympus@xxxxxxxxxxxxxxx>
Sent: Monday, October 14, 2002 10:34 PM
Subject: Re: [OM] 75-150mm lens separation (cementing lenses)
> At 4:47 PM -0500 10/14/02, clintonr@xxxxxxxxxxxxxxxx wrote:
> >Fargo sells some lens cement that cures with UV (otherwise called
"sunlight"!
> >;^). Check a hardware store -- it comes in a red syringe, marked "Duro
> >Crystal Clear"!
> >
> >We just soak the element in acetone, clean off all the old cement, put a
> >(bubble free) drop on the center of the concave element and press the
convex
> >element onto it, squeezing out the excess cement. Clamp with locking
tweezers
> >with pads on the legs, put in a window for a day, and presto! Works
great,
> >been doing it for years now!
> >
> >John Hermanson wrote:
> >
> > > What do you re-cement the elements with?
>
> Norland makes UV-cure lens cement, line their "Optical Adhesive 60",
guaranteed not to yellow. Edmund sells it. It sounds like this Duro
Crystal Clear is much the same stuff, though I haven't seen it. I used to
set the lens on a ring so the lens was horizontal, and the upper element
wouldn't tend to creep. Real industrial users use a high-powered UV source
to stiffen the cement in five or ten seconds, full cure in five minutes.
>
> <http://www.norlandprod.com/adhesives/noa60.html>
>
> See <http://people.smu.edu/rmonagha/mf/lenscement.html> for advice on
recementing lenses from the Rollei folk, also keepers of ancient flames.
>
> Joe Gwinn
>
>
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