If you are making pajamas or underwear it is important to use this type of elastic as you want something that can stretch and return to it's original shape so it can be more comfortably worn.
One is to start stitching at the center and stitch down one leg, then stitch down the other leg. The second method is to start at the bottom of one pant leg, stitch up to the center and then on down the other pant leg. Either one works, but if you are a beginner it might be better to use the first method.
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If you are making pajamas or underwear it is important to use this type of elastic as you want something that can stretch and return to it's original shape so it can be more comfortably worn.
One is to start stitching at the center and stitch down one leg, then stitch down the other leg. The second method is to start at the bottom of one pant leg, stitch up to the center and then on down the other pant leg. Either one works, but if you are a beginner it might be better to use the first method.