On Oct 15, 8:04*am, (David Combs) wrote:
My lenses will fall out of my frames.

This is even when there's an actual BOLT (with nut) being used.

(This latest time: nut has somehow unscrewed from bolt (and
disappeared) and of course the frame springs apart and
lens drops out.)

SAFETY ISSUE: should this happen when driving in heavy,
fast traffic, one could end up dead, especially with the
instant mix of one eye seeing and the other totally blurred
can screw up the brain mechanisms for "seeing" -- at least
for me.

So, suppose you used epoxy or some of that "instant"-glue to
avoid this happening; *where* (and how) would you apply
the stuff?

Around the bolt and especially the nut?

Along the inside of the rim?

Now, when and if your eyes have changed and you need
a new prescription, how to UN-glue the lens?

Is there some kind of a solvent that would work?

How about a Dremel tool?

Thanks!

David

i got the same problem with my prescription sunglasses i use for
driving. as somebody suggested, now that i look at them, the lens
isn't really perfectly shaped to the frame; anyway, since it's been
too long a time to take them back, i just got some very thin instant
glue, from a hobby shop, and ran it around the edge where the lens
meets the frame. decided on the thin stuff because it runs into the
space nicely, and cures very quickly, so i could do a little at a
time, hold the frame so the glued part was at the bottom until it
cured, and move to the next without worrying about it dripping onto
the lens, and still get it done in 15 minutes; and i didn't want the
bond to be so tight that it was permanent (i don't know why, as i
don't intend to reuse either the frames or the lenses, but anyway),
just solid enough to hold the lenses but still undoable.

i remember having glasses years ago which were pretty thick before the
high refractive index ones, and there seemed to be something like
double stick tape between the edge of the lens and the frames. more
than one pair like that.