Review on Get A Perfectly Smooth Finish With SUNJOYCO 4" Heavy Duty Turbo Row Diamond Cup Grinding Wheel For Stone, Masonry, And Concrete by Caleb Olsen

This grinding wheel does an excellent job of removing old glue from concrete. We pulled up outdoor carpet that had been glued down for 30 years, and thought the glue would be almost impossible to remove. However, this grinding wheel on a Harbor Freight angle grinder with a Herzo surface grinding dust shroud was definitely the tool to use. As with any tool never used before, I recommend caution initially until you find the right pressure and speed to apply to keep from making too deep of grove marks in the concrete surface.