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v, w, x

Value - The relationship of one fabric color to another with respect to lightness and darkness.

Walking foot - This foot fits on your sewing machine and is a must for machine quilting. While your feeddogs (those little teeth under your sewing machine foot) move the fabric on the bottom of your quilt sandwich, the walking foot moves the fabric on top. Without a walking foot the fabric on top eventually lags behind the bottom and you get puckers in your quilting.

Usually this foot does not come with your machine. (Some machines do come with a built in walking foot.) Most sewing machine shops carry these feet in stock. You need to know what type of shank you have on your machine - straight or slant. The Bernina is the only machine that has a special walking foot - last time I checked the Bernina walking foot was around $80 compared to $20 for most other walking feet.

Whole cloth quilt - A whole cloth quilt's top is made from one fabric.