Technique: Mitered Cast On and Bind Off

One method of hiding the raw edges on ruffle yarn is to work them into the bind on and cast off of a piece.

Casting On

Fold the raw edge diagonally so that the first row of alternate spaces meets the loops formed by Threads 1 and 2.
	Match the loops to the alternate spaces. You may need to pin the openings to a padded board to keep them aligned.
Cast on or chain as usual, keeping the matched openings together.

Finishing Off

As you approach the end of your piece, count out the number of loops you need to bind off and/or finish the final row or round. You should do this when you require one or two loops more than the number of alternate rows on your yarn.

Cut the yarn with two or three loops more than you need to finish your work.

Fold the raw edge diagonally so that the first row of alternate spaces meets the loops formed by Threads 1 and 2. Be sure to make your fold so that the raw edge will end up on the inside of the work, rather than the outside (as I did in following photos).
You may need to transfer the matched loops to a cable needle or other holding needle to keep them in order as you finish the final row.

A third needle keeps the loops-to-be-worked straight

Continue to crochet, or to bind off, as usual. Finish and secure the threads and open loops at the working edge.

A mitered bind-off

Note that if I had folded the raw edge to the other side of the working edge, the raw edges at the top would have been hidden.