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Extremely hard blue steel, harder than tf denka, harder than takagi honyaki. Maybe on par with biggerson? It's more abrasion resistant than biggerson, and has finer edge taking. Biggerson was my previous hardest carbon steel

150mm x 49mm x 4mm, 144 g
 
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I got Covid then wife got super busy, but finally got a minute to put this knife back on stone. Finished up the left side with my Uchi. Maybe will finesse it a little more with some powder, but looking ok to me. Some scratches remain, but c’est la vie.

Fun to contrast the stone finished bevel with the factory on the other side. Quite an improvement if you ask me. Now on to sort the right side. Will update with progress.

 
I played with my natural stones after almost a year of letting them collect dust. It was a quick 3 hour project redoing the geometry and polishing the kireha on this wrought iron. Atoma 140, venev 240, Naniwa diamond 600, Naniwa diamond 1k, Natsuya, Ohira (unknown mine) and uchigumori finger stone for the final glazing.

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Natsuya action

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KasumiJLA said:
I played with my natural stones after almost a year of letting them collect dust. It was a quick 3 hour project redoing the geometry and polishing the kireha on this wrought iron. Atoma 140, venev 240, Naniwa diamond 600, Naniwa diamond 1k, Natsuya, Ohira (unknown mine) and uchigumori finger stone for the final glazing.

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Natsuya action

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How do you like the venev after the Atoma. Does it work pretty quick?
 
enrico said:
How do you like the venev after the Atoma. Does it work pretty quick?
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What I like the most is that you are completely mud free. Coarser stone can scratch the hell out of the KU and with diamond, so far, it seems easier to manage. Cutting speed was fast with the Venev but my atoma is quite worn out so scratches wasn't that deep. Way faster? Not really. But it's fun to have something that can stay flat without worrying about it!
 
Some photos of the result of my polishing yesterday. I tried a variety of techniques and different approaches to try to save time. And as always, there are no shortcuts. What a surprise!

Out of 8 hours polishing only this side of the test blade I lost about 6 hours. I had to do a reset twice, which involved going back to the 1k sandpaper before starting again with the diamond paste. It's brutal. But when the result is to your liking, it's crazy how much you forget the wasted time.

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KasumiJLA said:
Some photos of the result of my polishing yesterday. I tried a variety of techniques and different approaches to try to save time. And as always, there are no shortcuts. What a surprise!

Out of 8 hours polishing only this side of the test blade I lost about 6 hours. I had to do a reset twice, which involved going back to the 1k sandpaper before starting again with the diamond paste. It's brutal. But when the result is to your liking, it's crazy how much you forget the wasted time.

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This looks great! Are you willing to share what techniques you tried? Whether they worked or didn’t work?
 
NickMinton said:
This looks great! Are you willing to share what techniques you tried? Whether they worked or didn’t work?
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I've tried several types of jnat and the good old uchigumori does a really nice job on martensite. It's a question of pressure, lubricant, direction of movement etc. I made a homemade "nugui" with different types of abrasive depending on the stage of polishing I am doing. But basically diamond paste really covers everything you need to work well. But I am trying to refine my technique on the coloring of the steel and the homogeneity of the result.
 
KasumiJLA said:
I've tried several types of jnat and the good old uchigumori does a really nice job on martensite. It's a question of pressure, lubricant, direction of movement etc. I made a homemade "nugui" with different types of abrasive depending on the stage of polishing I am doing. But basically diamond paste really covers everything you need to work well. But I am trying to refine my technique on the coloring of the steel and the homogeneity of the result.
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Uchi bench stones or primarily finger stones?
 
Just got the omoteyama kiita koppa today. While it was shipping I convexed the bevel of this knife a little more and prepped it as best I could, and after an hour of testing and getting a feel for the stone, this is what I got:



Pretty sweet if you ask me!
And I love the different looks of the bevel at different angles. It can vary from super reflective to super contrast-y, and although that's always the case, this is definitely the most extreme example I've seen.

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Decided to try again with the @milangravier; this time I went up to the finest Jnat I have (a hard eastern mine renge suita), with the idea being that I’d be able to bring the core steel up to a bright semi mirror, and it would be easier to paint the cladding with fingerstones from a higher level of refinement.

I did a few cycles of etching and fingerstones to increase contrast and develop more detail in the wrought, and covered the core steel with nail polish to protect the stone polish during etching.

The higher polish shows up the remaining sandpaper scratches from when I bought it (not direct from Milan!), but I will work those out in the future.

I think this is a definite improvement from my first attempt, with one or two more hours of work required to smooth out the finish.

 
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Life got busy so it’s been a while, but finally getting to the other side of this Hado petty.

SG500 to see what I was dealing with. Hollow grid a little more consistent on this side.

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Took it to SP220 to sort things out. Only took about an hour, mostly focusing up at the shinogi line. A few stubborn factory scratches in the core steel, but got them out.

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Did some work tonight on the JB Damascus 260. Turns out, polishing is a lot easier when bevels are already evened out by the blade smith. Thanks Joel!!

New JNS 800 stone (rated as 1k)



JNS Blue Aoto



Asagi Ao Renge Yaginoshima and Nanohone 6k

 
Took a deep breath, calmed myself down and did what @Ok__mode_6953 and @Uncle Danny have been wanting me to do for a while…put my Shihan on stones.

Wanted to see the overall geometry and identify low/high spots. This is about an hour on the JNS 300 and Shapton Glass 320.

Noticed a general low spot on the last 2-3 inches towards the heel I’m working on. I’m all ears for any feedback or advice people have.

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Uncle Danny said:
Looking good buddy. I appreciate you getting it ready for me 😂😂😂
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Not if it’s ready for me first 😉

@NickMinton looking good!! I personally wouldn’t chase out a low spot like that with one of my own knives unless it was a thiccums and needed some decent thinning anyway.

If the rest of the knife is good to go, you could try stone polishing the hira, then mask it off at the shinogi, do a sandpaper progression along the bevel, and paint over that with fingerstones?
 
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