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What is "Seam Allowance" - Definition & Explanation

The amount of fabric extending beyond a seam and not visible once the seam is sewn.
Narrow width between the seam line and the raw edge of the fabric. Seam allowances vary depending on where they occur on the garment and the manufacturers' specifications. Home sewing patterns generally have a 5/8" seam allowance except at hems. Commercial patterns generally use 1/4" to1/2" except at hems.
The width of fabric between the sewn seam and the cut edge. Traditionally 1/4 inch.

Some other terms

Some more terms:

Any twill weave which runs from the left. The twill or diagonal line on the face of the fabric will run from the upper left-hand corner to the lower right-hand corner of the fabric. Leight Weight-...
A finishing process for woven or knit fabrics in which brushes or other abrading elements are used to raise a nap (a fuzzy or downy surface). Brushed fabrics have a soft, slightly weathered,...
Moccasin is a native American word, and means a shoe made of deerskin or soft leather. It is made in one piece; the sole is soft and flexible and the upper part is often adorned with embroidery,...
A trapezoid-shaped window treatment usually at the top of the window. Can be pleated or shirred and is often paired with jabots. A continuous or scarf swag is drape over a pole and on the left and...
Said of a cloth which has irregular stripes or streaks of practically the same color in the background. Each yarn in the motif is dyed a solid color. runs in the warp direction of the goods, and...

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