How to Sand Edges of Rock

"We've done all of the cutting and the first polish all the way on all the flat edges, drilled holes, beveled, checked for scratches, and now we're going to do that edge with the 220 that I was talking about. And the reason I want to do that again is because even though we're trying to keep the edge on it, it still needs to be run over with the sandpaper or it will just leave a big ugly white mark instead of a shiny edge. So this step you want to go over really quick. You don't need to pass over it two or three times. All you've got to do is just go once over every line that's in there. Just think of them as lines. Don't think of them as an object, just think of each individual line and go over it really quick. So we'll do that real quickly. If your dremel stops, there's a spring inside. Okay, I believe I've gotten every edge on there. I'm going to feel it a make sure... you can still see that there's still a straight line, but as you run your fingers over it, it's rounded. It's not longer sharp. So we're ready for polish."