Before you cut fabric for a garment, it’s important to ascertain that the fabric’s grain is straight. That means the fabric’s warp (lengthwise) yarns are perpendicular to weft (crosswise) yarns. During the manufacturing and finishing processes, textiles can be pulled off-grain. It’s important to remedy this before cutting. Otherwise, your garment may be off-grain, and it will twist, hang unevenly, bunch, or ripple. See how to straighten a fabric’s grain in this video, so you can prep your fabrics correctly for great sewing results.
Find out more in “Prepare Fabric Properly” by Daryl Lancaster from Threads #184 (April/May 2016).