Best way to clean up window frames

We used a 3M wheel chucked in a corded drill. The red, not gray, one, about 5" diameter. Looks like a stiff sponge about a half inch wide. Masked off the walls and glass around the windows, removed the horizontal screws, then reversed with the verticals with new stainless steel  screws in the finished legs. Went at a satisfying pace and able to get 90% coverage with the tool. Left a shiny tool-grained mill finish and cleaned out the pits but didn't remove them. I like the clean look. Some deep corners needed 0000 steel wool wrapped on a putty knife. Took under two hours per window. Going to use that same tool set-up to uniformly clean up our new J-rails.