Here's an overview of the different types of concrete resurfacing equipment available. There are two types of grinders: planetary and rotary. Planetary grinders typically use diamond-, ceramic- or ...

Most true concrete polishing machines are planetary ... You can still polish with these grinders, but they require more skill by the operator, using oscillation to prevent striping the floor.

Depending on the wheel or disk type, you can use an angle grinder to remove dust, clean up welds, cut concrete, and sharpen blades. You should choose an angle grinder for larger jobs, like buffing ...