Thread one looped end through one half of the magnetic clasp and fold it over towards the knot.

Use tape to connect the looped end to the cut end, trimming one or both if necessary.

Wrap a scrap piece of cord around your wrist to measure your desired length, then use that cord to hold up to your bracelet as you affix the other half of the clasp to the other side of the bracelet.

Remember that one piece of the clasp will have the smooth side facing out and the other will have the smooth side facing in. Try on your bracelet to check the fit.

Next grab your embroidery floss and begin wrapping at the side of the knot. At first, also wrap around the loose conductive thread tail, then after a few wraps fold the conductive thread back and finish wrapping down to the clasp.

When you get to the end, you can thread the floss onto a tapestry needle and bury the leads under the wrapping. Snip the tails.