So that my glasses don't fall off, I attach one of
these sports-bands (I think that's what they're called).

Problem is, the attachment to the arms of the glasses
isn't so secure, and comes loose, glasses fall off or
get knocked off, and get damaged.

So, how do they attach?

[Sorry for my evident inability to better describe
the apparatus (way too fancy a word for it); probably
the only ones who'll be able to visualize the thing
will be those who themselves use these things!]

Each end of the (adjustable=length) elastic-band has a
plastic loop, through which you insert the end of
the "arms" (the part that goes over the ears).

At the band-end of each plastic-loop is a tightly-wrapped
metal-band, which you can slide up towards the fatter part
of the loop, ie the part you inserted the "arm"-end through.

Which tightens the loop around the arm, so it won't slide
off.

Problem is, that thing you slid forward doesn't always
*stay* forward, but slides back a bit, sometimes, letting
the loop get bigger again, letting it come off the arm,
freeing the glasses to fall off.

------

I've tried dripping glue on the boundary between the
plastic loop and the metal thing.

I've tried both instant-glue ("crazy"? glue), and
Duco Cement. Neither works very well.

I was thinking maybe a soldering-gun could melt the
plastic? Maybe a candle? Maybe wrap some wire around
the plastic, just "behind" the slid-slider. Or maybe
some other kind of glue?

One problem with applying the glue is that the
directions always say to apply it first to both
surfaces, separately, then let it sit for maybe
a minute, and only THEN, pressing them together.

Not so easy with this thing -- I mean, just what
do you glue separately, when one of the two
surfaces are the *inside* of the metal slider-thing,
which you can't get at (the inside is pressing
against the plastic it is going to slide along).

All I need to do is put *something* at the back end
of the slid-slider, so it can't slide back.

Any suggestions?

Thanks!

David