Polishing scratches after hamaguri sharpening - yanagiba, deba, etc

[Dan-]

Following Jon's process for sharpening my 300mm g3 yanagiba, I'm able to get a great edge, but both the upper and lower sections of the bevel end up looking quite scuffed. This is less a problem with my blue2 deba for some reason, perhaps because it's soft iron clad. Anyway, I'm using a 5k shapton pro and an 8k shapton glass. Both were freshly flattened. The ura only sees the 8k. When I sharpen other knives, the 8k takes all the scratches right out.

Questions
Do the scuffs increase drag? In other words, is this just an appearance thing, or would I have better cutting results with a cleaner polish?
Is this just because it's stainless clad ginsan? Like I said, the blue 2 is iron clad.
Would adding a natural stone to the end of the progression help and clean up the road, and if so, which one(s)?

Side note, the other day processing some sea bass, the yanagiba became progressively toothier (it'd been a while since sharpening it) and toward the end was cutting through the skin instead of gliding along it. Not your usual problem with dullness.

 

[Se1ryu]

Following Jon's process for sharpening my 300mm g3 yanagiba, I'm able to get a great edge, but both the upper and lower sections of the bevel end up looking quite scuffed. This is less a problem with my blue2 deba for some reason, perhaps because it's soft iron clad. Anyway, I'm using a 5k shapton pro and an 8k shapton glass. Both were freshly flattened. The ura only sees the 8k. When I sharpen other knives, the 8k takes all the scratches right out.

Questions
Do the scuffs increase drag? In other words, is this just an appearance thing, or would I have better cutting results with a cleaner polish?
Is this just because it's stainless clad ginsan? Like I said, the blue 2 is iron clad.
Would adding a natural stone to the end of the progression help and clean up the road, and if so, which one(s)?

Side note, the other day processing some sea bass, the yanagiba became progressively toothier (it'd been a while since sharpening it) and toward the end was cutting through the skin instead of gliding along it. Not your usual problem with dullness.

Stainless steel is easier to get scratch than a carbon steel. Thats why I prefer high carbon steel for single bevel. Maybe you can try using natural stone powder and 3M sponge sandpaper to blend them or you can try metal polish like koyo blue in the last step

 

[Dan-]

Ok, so it's just the nature of stainless cladding and to be expected. Will just use metal polish I guess. In Jon's videos, he uses a couple stones to finish, and I thought that was the way.

 

[Se1ryu]

Ok, so it's just the nature of stainless cladding and to be expected. Will just use metal polish I guess. In Jon's videos, he uses a couple stones to finish, and I thought that was the way.

Yes, If I'm not mistaken he used high carbon steel for that Sharpening video. Watch that video long time ago.

With high carbon steel you can play with synthetic and natural to get the beautiful finish you want.

 

[Blank Blades.]

Are the 5k scratches the ones you aren't able to remove with the 8k? Or are you used coarser stones before?

Anyway. Keep in mind that generally speaking stainless is going to be a bit more wear resistant than carbon steel. This will depend on a ton of factors, but its definitely something that can play a role.

When you said he, did you mean ginsan 3?

 

[Dan-]

Yeah, scratches from the 5k. It looks like dull scuffs. And yes g3=ginsan.

 

[Blank Blades.]

You may need to spend extra long on the 8k especially with stainless. It should eventually polish just as well as the other knife.

Also to answer the other question a rougher finish will lead to more sticking. It's not extreme, but it does happen.

 

[M1k3]

You may need to spend extra long on the 8k especially with stainless. It should eventually polish just as well as the other knife.

Also to answer the other question a rougher finish will lead to more sticking. It's not extreme, but it does happen.

Rougher finish causes more friction while cutting. Can feel like wedging.

A finer finish causes more sticking, especially on wet stuff like cucumbers.