Assembling a seamed sweater is an important step that often is not given much detail in patterns. There are many different seam types to choose from that will get the job done, but they all have their own strengths and drawbacks, and some only work on certain edges. When it comes to seaming vertical-to-vertical, horizontal-to-horizontal, and vertical-to-horizontal edges, we’ve got two favorite seaming stitches that can be used separately or together to finish a sweater: mattress stitch and fake grafting! We chose these two seaming stitches because they’re strong but have some stretch, and they create neat, discreet seams.
Vertical-to-Vertical Edges