Everyone has a different method but when it comes to "cleaning/polishing" that is the last item on the agenda. I want the cases ready to load when they dry from washing! Sure, you don't wanna scratch your die-I understand that. None of my cases have grit as I generously spray em all down with a 10/90 solution of lanolin and Isopropyl alcohol. This also serves as my sizing lube when dry. I tumble wash once for 4 hours using Dawn, Lemo-shine and water. But like I said, there's a few ways to do, this is easiest for me.