After you have carded your wool and it is still on the drum you might like to have it as roving instead of a batt. This will show you how to use a simple diz to do that. You can make a diz out of almost anything. mine is a piece of plastic cut from the side of a plastic sour cream container, it has a hole in the middle for the wool to come through. you pull a small bit of the carded wool through the whole and turning the drum backwards slide the diz around the drum pulling the wool through in a long rope as you go. the diz rest directly on the drum. You control the amount of wool in the rope by how fast you slide it across the drum as you go around. If its too hard, you are trying to pull too much wool through the hole.