Why your knitted scarf keeps curling at the edges

How to Make a Border | Knitting · 4:03 · Video: Howcast · Watch at the source

In short: The stockinette stitch is a staple of knitting, but it possesses a frustrating physical property: it naturally curls at the edges. To achieve a professional, flat finish on items like scarves, knitters employ specific border techniques that manipulate the tension and structure of the yarn.

Stockinette stitch—the classic 'V' shaped pattern—is prone to rolling because of how the stitches interact. When knitting a piece with only stockinette, the edges lack the structural integrity to stay flat. To counteract this, knitters often frame the center section with a garter stitch border. Garter stitch is created by knitting every row, which produces a bumpy, textured fabric that remains stable and does not curl.

The construction involves establishing a base border of garter stitches before beginning the main body. In one specific method, a knitter might allocate five stitches for each side of a fifteen-stitch stockinette center. To maintain clarity during this transition, many use stitch markers to signal where the border ends and the body begins. A key technical detail involves 'slipping' the first stitch as if to purl or knit (depending on the row) and placing the yarn behind to ensure the edge remains clean.

The most critical mechanical shift occurs when moving between the garter border and the stockinette center. Because garter stitch requires knitting on both the front and back, while stockinette requires alternating knits and purls, the knitter must move the yarn to the correct side of the needles at specific points. Failing to move the yarn correctly can result in an 'accidental yarn over,' which creates a hole in the fabric. For those seeking different aesthetics, alternatives like knitted-on I-cords can also provide a tidy, rolled edge.

While garter stitch is the standard solution for preventing curls, it isn't the only option. Knitters may choose to use a contrasting color for the border to offset the center or use an I-cord in the same color for a more seamless, integrated look.

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