Burnishing is like giving a shiny, smooth finish to metal objects like jewelry or silverware.
Imagine you have a shiny penny that you want to make even shinier. You take a spoon and rub the penny really hard with the back of the spoon. After doing this for a while, you will notice that the penny starts to become even shinier and smoother than it was before. This is kind of what burnishing does to metal objects.
But instead of using a spoon, special tools are used to rub the metal object with a lot of pressure. The rubbing creates heat and friction, which helps in smoothing out the surface of the metal object. The result is a shiny, reflective finish that can make the metal object look new and beautiful again.
So, that's what burnishing is - using special tools to rub metal objects with a lot of pressure in order to make them smoother and shinier.