I wish I could read German, I am German....DOH......:gaah:
I don't know, I still think it's a great polisher. I think the true test is in the shave. Forget the science. Sometimes it's best not see. Like Magic. It spoils it.
Even USB Microscopes, After seeing some of the edges at 200x, I don't want to shave anymore. Without getting off topic. Every time I read a review of someone using a C12K as a finisher is positive. Not once have I read, " I just got done doing a hundred laps on my C12k and the razor felt like a rusty rake.
It's always been positive. I continue to use mine. I think it's better with the slurry. I find the blade to be smooth and sharp.