Anyone polish an LA timing chain cover before?

I did an alum intake over the winter after porting on it for weeks, it turned out pretty good. I sanded it fairly smooth (can still see a few sanding marks), and used mothers alum. polish on it. Didn`t take too long after the sanding process , only about 4 rub outs to shine.


Only 4 rub outs to shine?????? Seems pretty quick to me.