I think you have to agree with me when I say that sanders are helpful. You can use them for different projects and they will help you save a lot of time and energy.
People mostly use them for paint removal, but they can be used for different projects as well such as - sanding metal, sanding car, giving a smooth finish to a surface, etc.
Basically what sanders do is replace the old way of using sandpaper with your hand to sand a surface. That takes a lot of time and energy and most of the time the results are not good.
On the other hand, electric sanders come with a powerful motor that rotates the base up to 2000-3000 rotations per minute. Depending on the surface you can easily sand a big surface within minutes.
There are some types of sanders that can be used to cut metal too-- they are called grinders.
Since there are a lot of sander types and models choosing one can be hard. To help you make a better choice we have listed some specific tasks that you can use the sander and gave at least 3 recommendations on which sander to use for that.
Learn more about sanders and their uses.