Using a Random Orbit Sander
Learn how to use a random orbit sander. This sander can transform a rough-surfaced piece of wood to a piece of wood with a beautiful smooth finish.
The random orbit sander is a very good sander because it not only spins round like the normal orbital sander, but it also, while it is spinning, it also gyrates. So the spinning, the gyration and the movement of your hand creates a much finer, scratch-free surface.