The 306CBN is comparable in price to a monocrystalline diamond-coated sharpening stone. It offers much better value than a waterstone in that it’s harder, more durable, lasts longer and will never need to be flattened. And you’ll get back to what you enjoy more quickly – working wood.
At 3″ x 8″ the 306CBN is big enough to handle the largest plane blades and it easily accommodates a honing guide. One side has a fast, aggressive 400-mesh (about 37 micron) and on the other side is a somewhat slower cutting 800-mesh (about 15 micron). You can use the 400-mesh side for flattening the back of chisel and plane blades and for general edge shaping and maintenance. Use the other side to refine the edge.