This is a little introduction to the technique double knitting (in Finnish onteloneule)
Double knitting= reversible knitting. The end result looks like stockinette stitch on both sides. One can do double knitting in 2 different colors (both sides are one color) or by doing a color pattering that is reversible on opposite side.
There are several ways to do double knitting; the end result looks the same no matter how one does it. Still I feel that the most common way to do double knitting is to alternate a knit stitch of yarn A with a purl stitch of yarn B. Because the yarn (both colors) is held back when one knits, and to the front (both yarns) for a purl, the result is a both sided stockinette side. Meaning that you can´t see the wrong side. When you cast on you will cast on twice as many stitches as needed for the width, holding both color yarns at the same time (will be like 1white, 1 red, 1white, and 1red). The first color (in my example white) is called yarn A and is also the yarn that you will knit with. Then naturally the second color (in my example red) will be called yarn B and this is the purling yarn. You will always knit with yarn A and purl with yarn B, as you continue to work, you will alternate between knitting and purling. If you want to have a one colored side on both sides (no color pattern) you will knit the whole project like this. On the other hand if you want to make a heart on e.g. your hat, you just make B your A yarn and A to your B yarn (meaning on 1 side you have a background in white with a red heart and on the other side the background is red with a white heart).
You will do the purl sts the other way around, but be careful where you hold the yarn (in front or behind the knitting). If you want a purl sts with yarn A this is how you do it. purl the first sts(yarn A), holding yarn B BEHIND your work(Yarn A is held the way you normally purl)Yarn B is then knitted, but now you have to have yarn A in front of your knitting. If you don't move the yarns like this, your end result will not look correct)
Increases: You can do the increases any way you like. As long as you do the increases on the same place and time(first yarn A then yarn B)
Decreases: When you make my mittens pattern or if you want to knit a double knitted hat you must know how to decrease. This is pretty easy. You just have to move the yarn so that you have 2 sts of the same yarn beside each other( e.g. you want to knit 2 together, do like this: switch yarn B and Yarn A, so that it look like, yarn A, yarn A, yarn B ,yarn B(or like k,k,p,p). Then you knit yarn A:s sts together and purl yarn B:s sts together. Now you know how to decrease and increase :)
You can do double knitting on a circular needle, dpn or on long needles. I prefer to do it on circular needles or on dpn, because it is easier to keep track of witch yarn is A and B, especially if you do a color pattern. If you do it on normal knitting needles the challenge it to keep track of witch side you are working on, because every second row yarn A must me purled and yarn B knitted. But everyone are different, and if one can keep track of the sides and don’t mess it up, then hay, do double knitting like this, it is not wrong. I myself don’t like to do it that way, but that is just me.
It is not that difficult to do double knitting, it is like learning to ride a bike, because when you know the basics of knitting (knit and purl) anyone can do this. I highly recommend that you Google the technique or look it up a book that explains it well. I myself watched one 3 minutes long video on YouTube and after this I could do this technique. In the beginning it is SO slow, but ones you get a hang of it, it is not that difficult. The best thing is that after the technique is familiar one can make a scarf, a hat, or mittens. It is still best to so the first project without any ribbing or any color pattern. The first attempt may also lead to that the end result is quite loose, because you have 2 yarns to control at the same time. This is only natural, it will get easier, I promise.
Under my patters you find a headband that is a good beginner’s project using double knitting. Under my patterns you will also find a d.k. pair of mittens, it can be dune ones you understand what double knitting is all about and when you can both do knit and purl, increases and decreases using this technique. GOOD LUCK!!!!!