hand-held grinder could be one of the most versatile items in your tool box.
It's a fast solution for smoothing out bumps and other irregularities in both
horizontal and vertical concrete surfaces. You can also use it to remove
graffiti and worn coatings or paint and to roughen up floor surfaces in
preparation for coating application.
grinding diameters of 5 inches or less, these tools can't replace walk-behind
surface preparation machines for profiling large areas of concrete.
work easily in tight areas where the larger units can't manoeuvre, such as in
corners and close to walls.