The Basic Cast-Off: Knit Two, Pass One Over

The simplest cast-off is the basic bind-off or cast-off, and it works for most projects. Knit two stitches onto your right needle. Then use the left needle to lift the first stitch (the one closest to the tip) over the second stitch and drop it off the needle. You now have one stitch on the right needle again. Knit one more stitch, then repeat: lift the first stitch over the second and drop it. Keep going until one stitch remains on the right needle. Cut the yarn, pull the tail through that last stitch, and pull tight.

This method creates a firm, slightly visible edge. It works well for scarves, blankets, and garments where the edge will not be seamed to something else. The cast-off row is slightly tighter than the rest of your knitting, which is normal and prevents unraveling.

Key Takeaways

  • The basic cast-off (knit two, pass one over) works for most projects and takes about as long as knitting a regular row.
  • The purl cast-off follows the same steps but uses purl stitches instead, and creates a softer edge on the wrong side of stockinette stitch.
  • The suspended cast-off leaves stitches slightly looser and works best for stretchy fabrics or ribbed edges that need to move.
  • The three-needle cast-off joins two pieces of knitting at the same time and is the fastest way to seam shoulders or bind off live stitches.

The Purl Cast-Off for a Softer Edge

If your project is stockinette stitch (knit on the front, purl on the back) and you want the cast-off edge to look softer on the wrong side, use the purl cast-off. The steps are identical to the basic cast-off, but you purl instead of knit. Purl two stitches onto your right needle, lift the first over the second, purl one more, and repeat until one stitch remains.

This method is useful when the edge will be visible on the inside of a garment or when you want a less defined line. The edge still holds firm, but it blends better with a purl-based fabric. Many knitters use purl cast-off on the back of a sweater or the inside of a hat.

The Suspended Cast-Off for Stretchy Edges

The suspended cast-off (also called the suspended bind-off) leaves stitches slightly looser and is the best choice for ribbed edges, cuffs, or any place where the edge needs to stretch. Instead of dropping the stitch completely, you leave it on the left needle while you work. Knit two stitches. Slip the first stitch back to the left needle without twisting it. Knit that stitch and the next stitch together through the back loop. Slip the resulting stitch back to the left needle. Repeat from the beginning until one stitch remains.

This method takes a few more seconds per stitch but prevents the cast-off edge from becoming a tight band that cuts off circulation in a sleeve or cuff. It is especially important for sweater cuffs, sock tops, and hat brims. The edge remains elastic and comfortable to wear.

The Three-Needle Cast-Off for Joining Pieces

The three-needle cast-off binds off two pieces of knitting at the same time, joining them with a seam. You need two needles holding live stitches (stitches that have not been cast off yet) and a third needle to work with. Hold the two needles parallel in your left hand, with the right sides of the fabric facing each other. Insert the working needle through the first stitch on the front needle, then through the first stitch on the back needle. Knit both stitches together onto the working needle. Repeat: knit one stitch from the front needle and one from the back needle together. Now lift the first stitch over the second and drop it, just as in a basic cast-off. Keep going until all stitches are bound off.

This method is the fastest way to seam shoulders on a sweater or to close the top of a hat. The seam is visible on the inside but creates a strong, flat join. Many knitters prefer it to sewing seams by hand because it is faster and the stitches are less likely to come loose.

Common Mistakes and How to Avoid Them

The most common mistake is casting off too tightly. If your cast-off edge looks puckered or pulls the fabric inward, you are probably pulling the yarn too hard as you pass stitches over. Loosen your tension slightly and let the stitches move freely on the needle. A cast-off should feel about as loose as the rest of your knitting.

Another mistake is casting off in the wrong stitch. If your pattern says "cast off in pattern," that means you should knit the knit stitches and purl the purl stitches as you go, rather than knitting every stitch. This keeps the edge from looking broken or uneven. Read the last row of your pattern before you start casting off.

Dropping the yarn before the last stitch is find is also common. Always pull the yarn tail through the final stitch and pull it tight before you cut. If you cut too early, that last stitch can unravel and undo your entire cast-off row.

When to Use Each Method

Use the basic cast-off for most projects: scarves, blankets, hats, and garments where the edge will be seamed or hidden. Use the purl cast-off when you want the wrong side to look neat. Use the suspended cast-off for any ribbed edge, cuff, or place where stretch matters. Use the three-needle cast-off when you have two pieces of live stitches that need to be joined, such as shoulders on a sweater or the top of a sock.

If a pattern specifies a cast-off method, follow that instruction. If it does not, the basic cast-off will work. The difference between methods is small enough that a beginner project will turn out fine with any of them.

Frequently Asked Questions

What do I do if I cast off too tightly and the edge puckers?

If you notice the problem while you are still casting off, rip back to where the edge looks right and start again, loosening your tension. If you have already finished, you can gently stretch the edge while the fabric is still warm from your hands, or block the finished piece with steam to relax the edge.

Can I cast off in a different stitch than knit?

Yes. You can cast off in purl, in slip stitch, or in any stitch your pattern calls for. The method stays the same — you just change what stitch you are working. This is called "casting off in pattern" and keeps the edge from looking broken.

What happens if I accidentally drop a stitch while casting off?

If you drop a stitch before you have finished casting off, pick it up with a crochet hook and pull it back onto the needle, then continue. If you do not notice until after you have cut the yarn, you can use a crochet hook to ladder the stitch back up to the cast-off edge and find it with a needle and yarn tail.

Is there a cast-off that looks invisible?

The Kitchener stitch (also called grafting) creates an invisible seam between two pieces of live stitches, but it is more complex than a standard cast-off and requires a separate technique. It is worth learning if you want seamless sock toes or invisible joins, but it is not a replacement for a regular cast-off on the final edge of a project.