The tuck stitch is worked similar to the picot hem, but it is worked into the pattern to create texture and interest to the piece. A tuck stitch can be used in any pattern to add something different to your project. It creates a welt on the piece that stands out on the right side of the work. The technique is a little tricky to do as the stitches get tight, but it is not a difficult stitch to master.
Work the piece to the point where you want the tuck stitch to go. Decide on the width of the tuck. To determine the number of stitches to work for the tuck, multiply your stitches per inch by the desired number of inches.
Thread the waste yarn onto the tapestry needle. Thread this through the stitches, leaving the stitches on the needle. This will make it easy to transfer the stitches back to the small needle and finish the tuck.
Continue knitting on the desired number of stitches for twice the desired length of the tuck. A tuck is generally short, and is folded in half to complete. Fold the piece in half to determine if the tuck is the desired length.
Using the waste yarn as a guide, place the stitches on the waste yarn onto the smaller needle.
Fold the tuck in half, lining up the stitches horizontally with those on the smaller needle.
Knit a stitch from the main needle together with a stitch from the small needle by using the other main needle to go into the first stitch on each needle from the front to the back. Wrap the yarn around the needle normally, pulling the new stitch through both stitches and pulling both stitches off their respective needles. Continue until all of the stitches are worked.
Continue working your piece as set until another tuck is desired.