Dang Cord, if I didn't know better, you are offering to polish 9 rails for me. ;)

The thing that is so cool about using the bench grinder with steel wool is that when you have about 4 or 5 pads of steel wool on the spindle there is some cushion to it (keep it built up as it wears off). The steel wool will conform to curves beautifully and will be extremely smooth also.