Drafting for Worsted and Woolen Style Yarns on a Spindle by Carol Huebscher Rhoades
Spinning on a spindle doesn’t mean that you are limited to one type of yarn. It’s the same working on a spindle as it is on a spinning wheel: you can choose a fiber, its preparation, and a drafting technique to get the yarn you want. To get a particular yarn, select an appropriate spindle. The finer and lighter the yarn, the lighter the spindle— so use either a very lightweight spindle (less than 1 ounce) or a supported spindle. Conversely, it is best to spin a heavy yarn on a heavier (2 ounces or more) spindle.