If you leave the old glue, it will add a thickness to the mounting surface where
you are regluing the mirror. This thickness, while a fraction of a millimeter,
will change your finder focus / mirror angle, so infinity will no longer come
in.
Off course, be careful to glue the mirror in with the coated surface "up".
John
Toshihiro Sugimoto wrote:
> John,
>
> Thank you for your advice. Yes, I know that the mirror mechanism is
> so fragile that we can easily damage it.
>
> Yes, the mirror is completely separated from the plate, and there are
> two circular marks of glue on the mirror but it's not a glue itself, I
> guess. Besides these mark it is very clean. The marks will not affect
> the images on finder and metering function.
>
> On the backing plate, I see three black glue, each flattened and
> rounded shape, dots as you described. Two are on the bottom corners,
> and one on the top center. I don't think I have to remove these glue,
> because I can't do it without damaging the mechanism.
> The center of the plate is a rectangle through-hole to the backing
> sub-lens. There are bulges which must determine the position of mirror.
>
> BTW, what is "BB"?
>
> I'm going to find suitable epoxy glue.
>
> Any further comment would be appreciated. Thank you.
>
> Toshi in Kyoto/Japan
>
> At [Fri, 20 Mar 1998 04:07:54 EST], You wrote:
> > Before regluing the mirror it would have to be completely separated from
> > the backing plate so the old glue can be cleaned off. The glue is either
> > rubber cement or epoxy.
> > Look to see how many dots of glue there are, and I mean dots. There are
> > probably 3 or 4 which start out the size of a BB.
> > This usually changes finder focus and mirror angle so I don't recommend it
> > as a home job.
>
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