I have used rubber cord a fair amount this past year (I love the
contemporary look it gives) and I’ve been very successful using Rio
JetSet Adhesive (p 519 in the 2007 catalog). I’ve used primarily 2mm
or 4mm cord. On occasion I’ve made my own end caps when I either
couldn’t find what I wanted or needed it NOW - a true PITA - but
To test the adhesive, I took a piece of scrap rubber cord, adhered
the cord into a scrap piece of tubing with the adhesive (didn’t push
the cord all the way in, though enough for holding purposes - left a
bit of space at the top of the tube so I could get hold of it with
pliers)and allowed it to set over-night (although being a super glue
it dries quickly). I then secured the rubber cord in a vise and with
pliers grabbed the open tubing end and gave it a pretty strong pull
(more than you’d get from fastening or wearing the item. It held to
my satisfaction. That being said, I’ve usually had tubing that fit
the rubber cording pretty close. You could check with Rio about how
close the fit needs to be.
I like the fact that the Rio JetSet does not get brittle.
But then this is my personal experience, and I think each person
needs to do their own test to see.
I’ve been wearing a choker length necklace I made for myself (4 mm
rubber cord w/a pendant) for quite a while now and there is no
visible sign of the bond weakening. And I wear this piece frequently.
I used one of the twist clasps to fasten this one. So it gets twisted
all the time when putting it on or taking it off.