Confused between different fabric terminologies like warp, weft, count, grain, etc.? Part 2(grain)

Confused between different fabric terminologies like warp, weft, count, grain, etc.? Part 2(grain)

1. Grain: For woven textiles, grain refers to the orientation of the weft and warp threads. The three named grains are straight grain, cross grain, and the bias grain.

Non-woven materials such as felt, interfacing or leather do not have a grain. a. straight grain: The straight grain is oriented parallel with the warp threads and the selvedge.

The straight grain typically has less stretch than the crossgrain since the warp threads will be pulled tighter than the weft during weaving. Most garments are cut with the straight grain oriented top to bottom b. the crossgrain: The cross grain runs perpendicular to the selvedge and parallel to the weft threads.

The cross grain generally has more stretch than the straight grain since the weft threads are generally looser than the warp during weaving. Most garments (like pants or shirts) are cut on the straight grain with the cross grain parallel with the floor when the wearer is standing. This allows more stretch through the width of the garment, such as in a pants leg which needs more circumferential than vertical stretch.

Garments are sometimes cut on the cross grain, generally because the pieces are too wide to fit on the straight grain. Bias: The bias grain of a piece of woven fabric, usually referred to simply as “the bias”, is at 45 degrees to its warp and weft threads.

Every piece of woven fabric has two biases, perpendicular to each other. A garment made of woven fabric is said to be “cut on the bias” when the fabric’s warp and weft threads are at 45 degrees to its major seam lines. Woven fabric is more elastic as well as more fluid in the bias direction, compared to the straight and cross grains.

This property facilitates garments and garment details that require extra elasticity, drapability or flexibility, such as bias-cut skirts and dresses, neckties, piping trims and decorations, bound seams, etc.

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