A plug in sander is usually used to smooth down metals. When smoothing down metals, apply some oil to the metal after the sanding process is finished to add some shine.
Powder coating is commonly used on metals to give a smooth finish. The materials used in it include thermoplastic or thermoset polymers.
Spoons are not soft, but they are smooth. They are made out of hard metals like aluminum, steel and other metals.
A file is used to shave things down and create a smooth surface.
A file is used to shave things down and create a smooth surface.
Metals are exallent conductors of electricity due to the free valence electrons, however some metals can be used for heating to e.g. kettle. Coils in the kettle are large resisters which heat up the water. it comes down to what you actually mean why are metals nat used for heating because some are.
They help separate magnetic metals such as iron and steel from non magnetic metals such as aluminium. Metals have to be melted down at different temperatures so it's essential the less dense metals are separated from 'heavier' metals. Using magnets is a way of doing this.
A sled or toboggan is commonly used for sliding down hills in snowy conditions. These devices have a smooth bottom surface that allows for gliding over the snow.
metals...
Could be a sander or a router.
A simple example is that a flat metal file can be used in metal working to file down (smooth) rough edges on a piece of metal.
Screed is primarily used to smooth concrete after it has been placed on a surface, it is a flat board. It is an essential factor in placing down flooring.
The smooth muscle is used in all hollow organs.