You'll need two strands of 20lb hemp long enough to go around your wrist (with a bit extra just in case), and two strands of the 10lb hemp. The thinner hemp will be tied back and forth so you'll need at least 3-4 times as long as the finished bracelet, depending on the size of your beads.
These size 6 beads areeasily strung on the 10lb hemp string. Hemp really is strong. I didn’t use a needle to add the beads, just the hemp itself. You can use other beads as long as the hole is large enough for the hemp.
You're essentially using the thinner hemp to tie square knots around the core strands of hemp. For each knot, thread a bead onto each strand of thin hemp, then knot once.
I do have a tip for you. If you want your beads to be in a specific colour pattern it is helpful to line them up in the order they will be used. This made my project go even quicker. As a newbie knotter I can tell you I finished this bracelet in under 30 minutes.
Check your length, then knot and secure the ends with a dab of glue. Attach leather crimpsor necklace ends and a clasp, and you're done!