The basic bind off method creates a pretty tight edge. But sometimes, you’ll want a stretchier, more forgiving edge (for example, for the top of socks or for a neck hole of a sweater).
When you need a looser bind-off edge on your knitting, try this stretchy bind off method: the knit two together (knit2tog) bind off.
How to Do the Knit Two Together (Knit2Tog) Bind Off
Step 1: Knit one stitch
Step 2: Slip one stitch knitwise (or knit one stitch)
Step 3: Insert the left needle into the front of the two stitches on the right needle (from left to right).
Step 4: Knit these two stitches together, by wrapping the yarn around the back needle.
Step 5: Repeat these two steps until all the stitches are bound off. One stitch will remain on the right needle.
Step 6: Cut the yarn, leaving at least a 6 in tail, and then lift up the needle to enlarge the stitch until the tail end comes through. Tug gently on the tail to tighten the last stitch.
Bind Off Troubleshooting
If your bind off (cast off) edge is much tighter than your knitted fabric, try casting off using a needle that is one size larger.
You don’t need to slip all the stitches to the larger needle. Just start to knit and bind off with the new size needle in your right hand and the old size in your left hand.