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Finishing on a Jnat

I have a Ozuku Asagi from JNS. Been struggling to get a good edge. I was wondering if you use pressure when working the Tomo Nagura slurry or just the weight of the blade. I also have a Mejiro Nagura. I have been trying to finish on the Asagi after establishing a nice edge with a Coticule or a 10K Naniwa SS. Any help, tips, encouragement would be very much appreciated.

I did get a beautiful edge on a like new Double Duck Goldedge but have not been able to repeat that success. Mediocre at best.
 
Are you doing any water-only laps after the laps on Tomo slurry?

Yes, I pretty much always finish with water only laps after Tomo slurry. I'm glad you chimed in. Wanted to hear your thoughts! How bout using pressure on the Tomo slurry? I have not tried it, was wondering if that is what I am doing wrong.

Oh, just to eliminate some suggestions. The Asagi is lapped flat and polished to a mirror finish.
 

Kentos

B&B's Dr. Doolittle.
Staff member
Less pressure is always better. And as Gamma noted, finishing on water is like playing a solo show at Madison Square Gardens...it takes a lot of practice.
 
Less pressure is always better. And as Gamma noted, finishing on water is like playing a solo show at Madison Square Gardens...it takes a lot of practice.

Damn, I was hoping using some pressure was the answer. I have been using weight of the blade only so far. I'm just really frustrated with this stone! I'll figure it out eventually.
 
I've had a couple of Ozuku Asagis and the last one I was in the same boat as you, just couldn't get a good edge off of it. Finally i got pissed off and decided to mash down on the blade using half stokes and after using a bunch of pressure it started getting the suction feeling going and the edge turned out awesome. I continued to finish that same way each time I used that stone and had great results. I'm not saying it's the right way, but sometimes you just have to do what works. Try using some pressure and see what happens, worst case you get to start again, which isn't all that bad if you ask me.:biggrin1:
 
No pressures at all on any of the naguras or the tomonagura.
You need to make sure the stone is lapped and well smoothed as in no scratches on it at all.
 

Kentos

B&B's Dr. Doolittle.
Staff member
I've had a couple of Ozuku Asagis and the last one I was in the same boat as you, just couldn't get a good edge off of it. Finally i got pissed off and decided to mash down on the blade using half stokes and after using a bunch of pressure it started getting the suction feeling going and the edge turned out awesome. I continued to finish that same way each time I used that stone and had great results. I'm not saying it's the right way, but sometimes you just have to do what works. Try using some pressure and see what happens, worst case you get to start again, which isn't all that bad if you ask me.:biggrin1:

How much "mashing" monsieur? I may try that myself.
 
The key for me has always been a lighter that you think tomo slurry, hone on that until it breaks down-you will see color change, the feel of the edge is different. I dilute the slurry 2-3 times, clean everything off and give it 40-50 laps on plain water.

I always use a little more pressure than just weight of the blade-not a lot but some.

On most stones I can get a HHT 2-3 off the stone that improves after stropping to 4-5
 
When I was finishing on a Jnat (had two) I used the same pressure that I did when using a coticule. That is until I went to water only, then it was the weight of the blade.
 
i know my way is different.... but i use pressure at the start of every new slurry.. then slack off the pressure till i am barely using any....

when i go to water i do the same.... pressure to start then slack off as i feel the edge smoothing.. *(this takes a bit of practice..) then lessening till practically no pressure at the finish....

this way also helps me to keep from dinging a edge or making a misstroke....
 
Very hard jnats can damage the edge if you are not careful, that is why they are labeled for some one qithbexperience. I think you solution is to just keep practicing...
 
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