This is an excerpt from another conversation. If it's incoherent I blame it on Guinness Extra Stout.
"The diamond stones I use the cheap stones that come with the lansky angle sharpening kits. There's a coarse and a fine for the wet stoning to knock down the the worst of the milling marks. It's work but they chew it up, use an old tooth brush to clean the stones often. Once I get the tooling marks to where there just faint lines I'll switch to wet sanding (Use full strokes down the length of the blade). I start with 220 grit, when sanding don't stop until all the scratches from the previous grit are gone. Then progress through the different grits, I use 220, 320, 400, 500, 600, 800, 1000, 1200, 1500, 2000 and 2500 grit. At thatpoint you will have a mirror polish. For final touch I picked up a $50 bench buffer with spiral sewn buffing wheels and somegreen and red Rouge Jewelers Paste. Hit it on the buffer with the green paste then with the red and you'll have one slick n shined finish. On flat grinds I use the flat side of a sanding block, on shallow hollow and hollow grinds I use the curvedside of the sanding block. For convexed blades I use a1.5"x12"x3/16" piece of oak (hard but flexible) with a strip of leather on it to conform to the blade. Clamp the blade tight so it doesn't move while you work and go to town. Before you know it she'll sparkle and shed water like a fresh waxed car."