mate what i do is
1, oven pride
2, 400 wet and dry on a polisher circular pad
3, 1000 wet and dry " "" "
4, using a polishing mop ie sheepskin or cloth on a polisher, dremmel, or buffing machine (i use a flex vari speed) and a buffing wax stick, i use pink,
the whole process on a chain wheel after anno removal is about ten mins,
and comes up mint
im sure there are even quicker ways but this is mine hope it helps