Best brushes or tools to knock surface rust off steel frame
Just picked up a 90's Specialized Rock Hopper, but it's got quite a few areas of scratches under the paint and primer leading to rust.
Is there a certain bristle material to use by hand or in a drill to knock off the rust while preferable keeping the paint mostly in intact? I'll plan to use clear coat rattle can (or nail polish) on the bare metal after the rust is off.