Knot Knecessarily Known Knitting

I'm not sure how many helmet liners I've made at this point -- maybe half a dozen? I can knock one out in just a couple nights. They are easy knitting in the round, plus they have enough going to keep me interested. There is some 2x2 ribbing. There is the interesting way in which the face opening is created. There is a plain stockinette section, perfect for television or knit night knitting. There are a few decrease rounds to close the top. And then the whole thing comes to a close with some picked-up ribbing around the face. I've been asked to teach a helmet liner class at Rare Purls in Duluth. While it may not seem as if there is a lot to cover, there is quite a bit if you are looking to refine the pattern. To begin with: How to cast on? There's the trick of making the cast-on edge match the 2x2 ribbing in elasticity. This is important in a sock cuff that must hug the calf but fit over the foot. It is really important in a helmet liner that must hug the n...