Sweater knits are known for their striking textures and easy wearability. Unlike most finer-gauge knits, the stitches in a sweater knit are often arranged into complex patterns of cables, ribs, multicolor jacquards, or textural tuck combinations that mimic classic hand knits. Sweater knits can range from delicate and lacy to bulky and full of body.

The very properties that draw us to sweater knits, however, can make them challenging to cut and sew. The relatively large stitches of a true sweater knit, once cut, tend to fray or run. The fabric’s comfortable give can stretch out of shape through handling and sewing, leaving you with unattractive, rippled seams. Hems and edges are not typically pressed into sharp creases you are accustomed to in wovens and fine machine knits.

The good news is that there are reliable methods that can turn sweater sewing into a fun and rewarding project.

One…