<human>: How can I make the best use of a sanding drum?
<bot>: The first step to making the best use of a sanding drum is to determine what type of material you are working with. Different types of materials require different techniques and speeds when sanding, so it's important to understand how each one will react before beginning. Once you have determined the material, you should start by using a coarse grit (e.g. 60-120) to remove large amounts of material quickly. As you progress, move down in grain size until you reach a fine grit that suits your needs. Finally, be sure to change the direction of the drum periodically for even results.