While a grinder and a polisher are similar in some ways, they are designed for different purposes and have distinct functions. While it is possible to use a grinder as a makeshift polisher in some cases, it may not provide the desired results and can potentially damage the surface you are trying to polish.

Grinders are typically designed for removing material, such as grinding down metal or smoothing rough surfaces. They often have a coarse abrasive disc or wheel that is better suited for aggressive material removal rather than fine polishing.

On the other hand, polishers are specifically designed for achieving a smooth, glossy finish on various surfaces. They typically use a softer polishing pad and a polishing compound to gently buff and refine the surface.

If you attempt to use a grinder as a polisher, it may result in uneven or excessive material removal, leaving scratches or marks on the surface. Additionally, grinders often operate at higher speeds than polishers, which can further increase the risk of damage.

To achieve the best polishing results, it is recommended to use a dedicated polisher designed for the task. These machines are specifically designed to provide the right speed, control, and polishing action for achieving a smooth and shiny finish.