This seam works beautifully for sweater sides and underarm seams. It lays flat and is invisible.
1 Thread a needle with a long enough strand of yarn to sew your seam and leave a 6-inch tail.
2 With the right sides facing up, line up the vertical edges. Sew 1 stitch at the base of the seam to join the pieces: Insert the needle from back to front through the space between the first and second stitches on the lower-right corner of the left piece, pulling yarn through until only about 6 inches remains; insert the needle from front to back between the first and second stitches in the lower-left corner of the right piece; bring needle back through the same spot on the left piece again. Pull the yarn through snugly.
Now you are ready to work the invisible vertical seam.
3 Find the horizontal bar of yarn between the first and second stitches. Insert the needle under that horizontal bar, between the first and second stitches, 1 stitch up from the joining stitch, on the right piece. Pull the yarn through.
4 Insert the needle under the horizontal bar between the first and second stitches, 1 stitch up from the joining stitch, on the left piece. Pull the yarn through.
5 Insert the needle under the next horizontal bar up on the right side and then under the corresponding bar on the left side. Continue in this manner, alternating from side to side, to the end of the seam.
6 Weave in the loose ends. CONTINUED ON NEXT PAGE
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