Steps. Purchase a hair weft. Comb through the hair weft with a comb or brush just as you would your own hair. Prepare the hair weft. Lay the weft clip on a flat surface. Locate the 2 sewing holes on each side of the comb. Cut a strip of thread about 12 inches long. Sew each side of the hair weft onto the weft clip. Thread your cotton through your needle. Go through the top of the extensions (where the cotton is). Where u want your clip to start. Put the needle through the . Apr 19, 2011 - Clip-in extension kits, in both human and synthetic hair, are incredibly expensive, when . -Sewing machine, to attach the wefts to one another EASY How To Sew Clips Onto Your Hair Extensions / Weave /Tracks How To Make Clip In Hair Extensions - YouTube. In this post we will look at how to DIY your own thick clip on hair extensions. . Apparently you can buy bulk hair on a weft, cut the strips and sew or glue 2 or 3 . Having a broken clip can be very frustrating and it prevents you from wearing your extensions. If one or more clips are broken or damaged, the hair won't be .