I have a 4/8K Norton stone I want to flatten. I used sandpaper in the past and I think I embedded grit in it so with this one I thought I would try something else; also have a king 1200 stone. I thought I would try: 3" x 8" DiaSharp® Stone, 220x I can get this for $52.00 .The 325x is a lot more (I can pick up the 220x locally) so I would rather use the 220x if I can.
I also can get some lapping grit and use that and also purchase a DMT Dia-Sharp Credit Card Sharpener (coarse) for $37 with shipping.
I would like to hear experience on what would be a good choice.