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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:

The technique of permanently joining together two fabrics or layers of fabrics together by a bonding agent.into one package. The bonding of fibers in a single layer of material is called a web....
Wool fabric brings to mind cozy warmth. Some wools are scratchy giving some people the idea that they are "allergic" to wool. Although wool fiber comes from a variety of animal coats, not all wool’s...
Woven and non-woven material used underneath the item or fabric being embroidered to provide support and stability. Can be hooped with the item, or placed between the machine throat plate and the...
The ability of a fabric to resist such things as wetting and staining by water, stains, soil, etc. Resiliency - The ability of a fabric to spring back to its original shape after being t compounds to...
In screen printing a separate screen is created for each color. The open mesh part of the screen corresponds to the area to be printed in that color. The areas where color is not to pass through are...

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