Jeremy
after you have done you heat treating and tempering, you can sand it on the belt sander to get your cutting edge. You need the wet/dry sandpaper it's black. You can start with the grit that you stopped with, say 120-220 on the beltsander, then take your next grit and sand the other way until all the marks are gone, then go to the next grit and go the other way until they are gone, do this until you get the finsh you want. I use wd40 when sanding
hope this helps
Dana