I am using silver plated beadalon 19. I am curious how much I
should figure in for each knot in the length.
Lisa - I’ve usually added 1/8" for each knot when I’ve knotted
pearls, but it will depend on what kind of knots you tie (very tight,
a little loose, single or double). I haven’t knotted beadalon so if
it were me, I’d cut a piece of beadalon about2-3 inches long (enough
to be able to comfortably tie a knot in it). Measure it accurately
before you tie the knot and measure it accurately after you tie the
knot. You’ll know for sure how much cord the knot uses. Then cut
enough cord to make the necklace the length you want plus enough for
the knots and add in enough to add on the clasp. Then I add a bit
extra to give myself a bit of leeway. After all the cord is the
cheapest component of your necklace - don’t make it difficult on
yourself to work with it. Better to cut more than you’ll need than to
wind up and be short.
Just my approach to it.