The last part of the sock knit along involves working happily up the leg and then binding off. Two at a time is not difficult. I don't even teach it as a separate class. Rather, I do teach it as part of my knitting in the round class. If you are using the two circular needles method, then one needle goes in the first half of both socks and the other needle goes in the second half of both socks. If you are doing magic loop, then thread first half of the first sock, all of the second sock, and the second half of the first sock. It is that half—whole—other half threading that I think messes people up. While I prefer magic loop, two circulars is very useful and possibly more versatile. You can work very small circumference with both techniques. However, you can also work very large circumferences with the two circulars method by making it three or four or more. I could, theoretically, knit a house cozy simply by having many, many circular needles. Knowing which method you like for work...
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