Weaves can take hours to complete. To sew in a weave, the hair must be braided into cornrows to provide an anchor for the thread that attaches the fake hair to the head. The process becomes more tedious if you have to keep stopping because the needle has run out of thread before completing the track. Tracks are formed by the length of the weave hair. Many weaves are already pre-cut into tracks or sections, others come in one long track. If you don't want to stop to rethread the needle, you must use weave hair that is not pre-cut.

Hold up the eye of your hair sewing needle.

Insert the tip of the thread into the eye, and pull it through 3 to 4 inches.

Wind the free end of the thread around the needle twice. Push the wound thread down through the eye of the needle. Tighten it into a knot once it reaches the end of the needle.

Unwrap additional thread from the spool. Unwind at least 5 to 6 inches more than you think you will need to sew the entire weave track. This will ensure that you don't run out. If you are using one long weave track, unravel all of the thread from the spool. Use caution to ensure the thread doesn't get tangled.

Cut the thread from the spool, if you didn't unwrap it entirely. After you've sewn in the weave track, secure the end of the sewn-in thread into a knot, then cut away the excess thread.