: Shaping the center back seam of a pattern to match the body's curve rather than using a straight line.
: A straight zipper placed on a curved seam, such as the lower back, often creates a bulge because it doesn't follow the natural "S" curve of the spine.
: Pulling or stretching the fabric while sewing the zipper in can cause it to "wave" once released.
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: Shaping the center back seam of a pattern to match the body's curve rather than using a straight line.
: A straight zipper placed on a curved seam, such as the lower back, often creates a bulge because it doesn't follow the natural "S" curve of the spine. bulve.zip
: Pulling or stretching the fabric while sewing the zipper in can cause it to "wave" once released. : Shaping the center back seam of a