Crochet on the Double (COTD) is similar to Tunisian (Afghan) Stitch but uses a double-ended hook. They both make a nice, closed in piece, which is quite warm and reversible. In COTD you turn your work and can use two colors. In Tunisian you do not turn. Another excellent resource is How to Crochet on the Double by the Needlecraft Shop. (My copy is copyright 2000.) Wonderful illustrations to take you each step of the way.
What will you need to begin? A cro-hook - this is a hook that is similar to an afghan hook, longer than a regular crochet hook, but with two hooks, one on each end.
There are two lengths (10" and 14") in most sizes and now there is also the circular crochet hook (two crochet hooks with a flexible plastic center piece). These would be good for making larger items without having to piece them together.
You will also need yarn in two colors. I used orange and green in the photos. I used blue and pink in the video. The colors are your choice. You can even use the same color at both ends, but it will be more difficult to work, in my opinion. You will also need a large eye needle for sewing in ends.
You will always have the same number of stitches throughout. In other words, if you chain 15, you will have 15 when you finish.
I had to divide Part 1 of the instructional video due to the speed at which they were uploading, so there is a Part 1A and 1B. Both of these demonstrate the basic method of working Crochet on the Double.
The steps are:
1) Get loops on hook 2) Slide 3) Turn 4) Work loops off hook
If you have Color A loops on your hook, then you'll be working them off with Color B and pull through one of each color. If you find you are picking up the same color yarn as the loops on your hook you're at the wrong end.
If you just worked off Color A loops then you will put loops on hook with Color A.
So ON with like color, off with opposite color
For your final row, after you've worked loops off, instead of putting loops back on, you work a slip stitch to finish off.
Here are some pictures of the technique. (The smiley face was to keep track of which end was being worked.)
The following videos give additional information, but if you watched Part 1A and Part 1B, you have what you need to work a basic COTD piece.
The video below, Part 2, demonstrates Crochet on the Double in what I call the “knit stitch.”
The next video, Part 3, demonstrates alternate methods of working into the stitches in Crochet on the Double.
This last video, Part 4, shows some completed Crochet on the Double sample pieces worked using the different methods presented in the videos.
Good luck on whatever your next Crochet on the Double project may be!