This is my favorite part. You can use a wood working lathe and skew or make a lathe like in Catwood's Instructable 100%Homemade Lathe
.( If your lathe has a speed control you will want this to be as fast as possible) For a skew I use a round tip. You could also use a gouge or a chisel. Now take your Mandrel and bushings and put the blanks on there so there is a bushing then blank then bushing then blank then bushing. The bushings are your guide to how much you turn down the wood. Remember you can always take off more but you can't but wood back on. (or can you) Try to turn as smooth as possible so you don't have ridges.