If you’re just beginning to embroider or even if you’ve been at it for a while, the Portuguese knotted stem stitch is a nice outline stitch to master. A little more complicated than basic stem stitch, this knotted version produces a thicker, rope-like line. Here are some illustrated instructions.
The Portuguese knotted stem stitch is worked from left to right or bottom to top (opposite for left-handed embroiderers). Begin as you do for a stem stitch.
Bring your needle through the fabric, then take it down the length of your stitch, pointing it back towards the place you emerged. In the illustration, you’ll see that this is done using a “sewing” method – you work on top of the fabric, without having to go to the back. This stitch can be worked with or without a hoop – personally, I usually use a hoop, but when I’m using the “sewing” method (as opposed to the “stab” method, where your working hand goes to the back of the fabric to get the needle and put it back through), I don’t necessarily keep the fabric drum tight. A little give in the fabric helps with the “sewing” method of embroidery.
You want to keep the thread to the right of your needle when you draw it through, so that the working thread ends up to the left side of the stitch. Take the needle underneath the stitch you just made, without picking up any of the fabric. Do this twice, both times in the same direction, so that you are wrapping the thread twice around your stitch.
After you’ve wrapped the thread twice around your first stitch, you’ll take another stitch, just as you did the first, progressing up the fabric the length of the new stitch, and emerging where the last stitch went down into the fabric.
Now that you have more than one stitch, you are going to wrap your thread twice around the both stitches – the base of the former stitch (after the “knot” that you made on top of the first stitch) and the middle of the new stitch. Take your needle under both stitches twice so that the working thread winds around the stitches twice. See the photo above and below for illustration.
Notice how the needle passes under both stitches and does not pick up any fabric. This is done twice. In the photo above, one pass has already been made, and this is the second pass under the two stitches.
Continue along your line in the same manner, going forward the length of the stitch, pointing the needle back to where your last stitch went down into the fabric, keeping the needle on the left side of the stitch. Pull the needle through, then, going from the right side, pass it under the two stitches twice, and then proceed to your next stitch.
On the back of your fabric, you’ll see a line that looks like backstitches.
Have fun with it!
You can find more stitch directions here.