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y, z

Y-seam - A type of seam that is sometimes required for patchwork and mitered seams. It is called a Y-seam because it resembles the shape of the letter Y.

Yard - A yard measures 36 inches or 3 feet. A yard of fabric is 36 inches by whatever width is listed on the bolt. A yard of most cotton fabric is 36 inches by 44/45 inches.

Yo-yo's - Little circles of fabric that have been gathered are called yo-yo's. They can be put together into a quilt or can be used separately for applique.

Zigzag stitches - Most of the newer machines have a standard zigzag stitch.