Mirrored Jnat

[JOB15]

Hi, I need some advise please.
I have recently realised that I have been using my Atoma 1200 plate far to often on my jnat, leaving a matt finish to the stone.
Now I understand I should have a mirrored finish to the surface, or a slight mirror finish when tilted to an angle .
I'm having trouble creating that finish.
I've been going at it with my Tomo Nagura but no mirror.
Should I try using my Shapton 30k?
Thanks..

[gssixgun]

Really ???

Good to know I have been doing it wrong all these years


Just kidding a little

You have to learn your stone, and then decide how to use it for finishing, there really is no one way with J-Nats there are as many ways as there are stones well maybe not quite that bad hehehe

Some stones finish best with a near glass finish and use of Nagura, some with a matte finish and different or a same stone nagura some with no nagura and a matte or a glasls finish, some with using the stones slurry and a dry finish..

This are just some ways to use them not even all the ways..

There are no wrong ways or right ways there is only the way that works best for your stone and your style


To answer your question I have found that my well polished Arkansas stone is the best way to create a Mirror Sheen on another stone, they are extremely hard and don't shed grit, also quite inexpensive, and available near everywhere..

[mainaman]

You will not get mirrored finish with 1.2k Atoma.

The way I do it, is 320 DMT well used (think it is similar to 600 grit now), and leaves no deep scratch on the surface.
Then I use another Jnat to smooth the surface, you can use Nagura or tomonagura. With further use, the surface ill become as smooth as it gets.
Frequent lapping will require to go trough the process more often. If you have a hard finisher you should not need to lap too often.

[Iceni]

I agree with Gssixgun about using an Arkansas stone. I've been using one myself to remove the gunk on my naniwa superstones, and to finish the faces of the charnley forest hones I was making earlier in the year. The arkie is so damn hard that most stones will yield to them. And it takes a hell of a lot of abuse to make one dish.

You might also consider running your stone progression on the Jnat. If your Jnat is flat then using a 1, 3, 5, 8, 12K just spending a couple of minutes with each stone on the Jnat should put some polish back. It certainly shouldn't damage your hones provided there all flat to begin with. Just make sure you do it under running water and you keep both stones nice and flat. It might also be worth just knocking the sharp edges off the Jnat with The diamond plate so you don't go gouging your rotation.

[Druid]

After a trip to a well worn DMT 320, I rub the surface of the JNats with a tomonagura. I can achieve a sheen, which works for me, but I would never achieve a mirror-like finish. Besides, too much rubbing with tomo can create scratches in itself.

BTW, I do the same with coticules after the DMT ... A bit of a rub withg the yellow slurry stone, and I can sense the difference in the first razor off the stone if I don't do this.

So, whatever works for you is the best approach. Try everything, and make up your own mind. We're all different!

[JOB15]

Thanks for all your inputs.
Arkansas stone is the way forward I think.
I have achieved a smooth finish on my jnat with a couple of scratches ,thanks to my tomo.
I have tried everything , including Shaptons ,up to a 30k ( I thought I finally had a use for it)
My DMT 320 is redundant . After spending lots of time running a screw driver shank up n down it I purchased an Atoma 1200, that's now my go to lapping plate.