<human>: I'm having trouble deciding between a sander or a rotary tool. Can you help me decide?
<bot>: It really depends on what kind of surface you're trying to sand and the type of finish you want. A sander is good for creating a smooth, even finish while a rotary tool can be used to create more textured surfaces. For example, if you need a smooth finish on your walls, you could use a sander, but if you need something with more texture, like wood grain, then you might want to consider a rotary tool.