View Full Version : Proper way to do Kurouchi?

Don Nguyen
11-13-2011, 02:24 PM
Hello everybody.

I've been wanting to make a Kurouchi knife, but I wasn't sure if there was a proper way to do it.

I certainly don't want to leave the finish as-is from the forge, I'd be getting so much scale in my food; can't brush it off either. Some of it's stuck pretty dang hard on there, but it still comes off here and there.


Mike Davis
11-13-2011, 03:07 PM
Soak it in vinegar overnight. That will help to dissolve the scale left on it. Also it darkens it up a bit...Looks pretty good that way IMO.

11-13-2011, 09:12 PM
I'm curious to see all the ways the KU finish is done as well :)

Because there seems to be so many variations in the finish from what seems to be an applied finish to deeply etched and hard holding finishes.

11-16-2011, 08:54 AM
i found vinegar to take too long and never really got it all off.

I got some muriatic acid (pool supply store) and mixed it 1 to 3 with water

takes two or three cycles soaking for 15 minutes and scrubbing with a wire brush to get all the scale off