– Types and Uses. A concrete grinder is a finishing tool used to perform the process of grinding and leveling concrete surface to provide a smooth finish. The concrete grinder can be used as surface preparation tool, aggressive coating removing tool and as concrete polishing tool.Click to see full answer. Accordingly, how much will a concrete grinder remove?For example, as a grinder they are designed to remove a minimal amount of concrete from the surface—as little as a few thousandths of an inch. Therefore, if an end user wishes to remove a half-inch of concrete on a 10,000-square-foot floor, a low-speed surface grinder is not the ideal machine.Also, can you grind concrete with a sander? Yes, concrete can be sanded in order to get a smooth and consistent surface. It is actually necessary if you want to achieve one of the three typical concrete finishes that are also introduced in this article. Normally, large surfaces are sanded with hand-held or walk-behind concrete sanders or grinders. People also ask, how do you grind down concrete? Move the wheel/disc over the surface of the concrete quickly and smoothly. Make multiple passes over a high spot to grind it down. Do not simply hold the grinder in one spot, as this will grind channels into the concrete based upon the edge of your disc or wheel.What is the best concrete grinder? Here’s a list of the best concrete grinders we found: Metabo RSEV 19-125 RT Concrete Grinder – Top Pick. Bosch CSG15 5-Inch Concrete Surfacing Grinder – Best Value. DEWALT DWE46153 Surface Grinding – Best Cheap Pick. Bosch 1773AK 5″ Hand Concrete Surfacing Grinder. Metabo US606467800 Hand Held Concrete Grinder.