How to create the amazing Kurosaki contrast?

[ma_sha1]

Can anyone tell me how to do this?
I mean the frosted cladding on a polished core? Also, the double lines?

I’d like to do it to the Mazaki in picture as well as my TF which has no contrast. Given the amount of knives Kurosaki crank out, it’s unlikely to be Jnat?

 

[parbaked]

Looks like etching. The etching agent causes a different reaction to the cladding and core metals creating the contrast.

 

[ma_sha1]

The cladding is stainless & core is carbon, if etching, the core will be edged much more, so I think it’s no likely.

 

[McMan]

That powdery-white finish is usually sandblast.
(Benefits are that this gives a very consistent finish and hides low spots.)
Not sure about the Mazaki--there've been so many iterations of Maz finish (or lack thereof).

 

[F-Flash]

Looks like it's etched.

 

[Chuckles]

I would polish the core on that Mazaki some before etching.

 

[ma_sha1]

Can you guys explain how to do etching of the stainless steel cladding without etching corroding the core carbon?

 

[ChefShramrock]

The Mazaki is iron cladding. It would also be affected by the etching. afaik, cladding would need to be stainless.

 

[osakajoe]

Sand blasted after buffing and polishing for bring out the misty white.

 

[DisconnectedAG]

Dude, the Nashiji Maz is so dope. Don't dooooooo it.

 

[ian]

I remember someone mentioning that the double line was something you see more on stainless clad knives for some reason. But I don’t remember why. @inferno, was it you that said this? Or maybe I’m misremembering. Or is it a separating layer of something else?

 

[M1k3]

That different color between stainless cladding and carbon core? Carbon migration.

 

[James]

I remember someone mentioning that the double line was something you see more on stainless clad knives for some reason. But I don’t remember why. @inferno, was it you that said this? Or maybe I’m misremembering. Or is it a separating layer of something else?

Was it something about nickel between the core and cladding?

 

[Briochy]

That powdery-white finish is usually sandblast.
(Benefits are that this gives a very consistent finish and hides low spots.)
Not sure about the Mazaki--there've been so many iterations of Maz finish (or lack thereof).

My Kurosaki has a hidden overgrind near the heal, and it only showed up once I tried to polish it

 

[bahamaroot]

My Kurosaki has a hidden overgrind near the heal, and it only showed up once I tried to polish it

Nearly every handmade knife has an uneven grind on the blade road. There is a difference between a low spot and overgrind.

 

[Briochy]

Nearly every handmade knife has an uneven grind on the blade road. There is a difference between a low spot and overgrind.

As in, I foulmnd that there is a hollowed out side of the knife. If this isn't, what exactly is overgrind then?

 

[bahamaroot]

The blade road can be flattened on a stone if it is just a low spot. You rarely find a blade road that is totally flat. An overgrind goes past the center axis of the knife and can't just be flattened out and will eventually cause a hole in the edge from sharpening. This is rare for most knives though.

 

[Briochy]

I see, mine is mostly just cosmetic, then.

 

[ma_sha1]

Love the sand blasted finish!

 

[inferno]

Can anyone tell me how to do this?
I mean the frosted cladding on a polished core? Also, the double lines?

I’d like to do it to the Mazaki in picture as well as my TF which has no contrast. Given the amount of knives Kurosaki crank out, it’s unlikely to be Jnat?

its sand/media/bead blasted. 100000% sure.

also the "double lines" only shows up on carbon steel with SS cladding. and it will not show up if you try to do this on stones. ask me how i know. its a good indicator that the cladding is SS and not iron if thats not written in the description of knives imo. its 99% accurate i'd say. only time its not accurate is when the blade has been finished on stones instead of blasted. but its extremely uncommon.