A stump grinder or stump cutter is a power tool or machine that gets rid of tree stumps through the process of a circular cutting wheel which chips at the stump little by little.
Stump grinders could be rather small or even as huge as a vehicle. Nearly all complete its job by means of a rotating wheel by using knifes which mill the stump down along with the roots into tiny chips.
An average stump grinder has a rotating disc having carbide knives. The rotating disc motions usually are manipulated through hydraulics that will force the rotating disc from side to side through your stump as well as to raise and lower the rotating disc.