Deckard said:
Cubic Boron nitride is actually harder than diamond, one of 2 substances.
You would imagine this to give a harsh edge to a razor, maybe crystal shape is a factor?
:-/
I thought so too, but it doesn't.
It's far smoother then diamond.
Why it is that way, I'm not really sure of,b ut it probably has soemthing to do with the various angles & shapes the CBN particles have.
Much like the garnets in coticules or the abrasives in J-nats, they are not uniform.
Maybe that is why it creates such a smooth edge, despite it's tiny size & incredible hardness.
The 0.125 CBN creates the sharpest edge imaginable, but still it isn't harsh on the face.
However, the wicked sharpness does make it rather unforgiving & you really have to pay close attention to what you are doing when shaving.
I myself have a rather sensitive face, but I can still get a full 3-pass shave without any irritation or blood-loss. Sure, my face feel rather rejuvinated afterwards, but still very pleasurable.
Once I get some of that stuff home, i'll see what it can do in cooperation with a coticule