[suzeeq]

The cast off is really like doing another row of the pattern, except that you don't leave a stitch on the R needle. Whichever row you begin with depends on if you're at the beginning of a k2 row or p2 row when you get to 70" or however long you want it. So either begin with k2 and pass the first st over, then p1 and pass a stitch over, p1 and pass a stitch over, k1 and pass a stitch over and so on. OR - begin with p2, pass a st over, k1 pass a stitch over, k1 pass a stitch over, p1 pass a stitch over and so on.