Okay. So I will be getting some kind of DMT 320 grit/Coarse. However, since I will probably need something rougher for the Swaty, and I decided I want something a little finer to finish, I stopped by autoworks and got the following: a 3-pack of 3M 80 grit wet/dry paper, a 3-pack of 3M Sandblaster 120 grit paper, and a 4 sheet variety pack of 3M wet/dry paper that I think goes 400 600 800 1000. All of them are the large sheets. I also stopped by Lowes and picked up a marble tile, I laid two of them together and light didn't shine through and it produced suction, so I'm guessing that means its pretty darn flat right? So I plan to use the Sandblaster, as I think 80 is too coarse, but my question is, can I use it wet? No where on it does it say wet/dry, so I wasn't sure, which is why I got the 80 grit wet dry, just in case. After I lap my rocks on the DMT I want to give them a quick run through on the finer papers. Did I get the right stuff?
I found an iron pipe in my garage, can I hit the DMT with that? It looks kinda gunky. Would I be better off going to the dollar store and getting a ****ty knife?