what's been your experience with the Japanese Stone on your T4

[truthrider]

I recently picked up a used T4 after several years of getting mixed results with flat wet stones (some great, some not so).
I've sharpened one Shun pairing knife so far and had am quite happy with the result.

Since I saved a little $$ buying used, I'm wondering if adding the Japanese Stone would produce much of an improvement.  I'd appreciate hearing your experience.

Also, I do have some good flat stones.  Do any of you finish your knifes on flat stones after using your Tormek.

Thanks

Marty

[cbwx34]

I recently picked up a used T4 after several years of getting mixed results with flat wet stones (some great, some not so).
I've sharpened one Shun pairing knife so far and had am quite happy with the result.

Since I saved a little $$ buying used, I'm wondering if adding the Japanese Stone would produce much of an improvement.  I'd appreciate hearing your experience.

Also, I do have some good flat stones.  Do any of you finish your knifes on flat stones after using your Tormek.

Thanks

Marty

I have an SJ stone and rarely use it, unless I just want a polished bevel.  I guess it just depends on what your goal is, but the edge off the SG wheel (and deburred) is usually enough for me.

I will sometimes set an edge with the Tormek and then switch to a flat stone to refine and/or debur it. (Mainly cause I like sharpening that way sometimes.)

There are many paths to sharp... 

[3D Anvil]

I think what CB is saying is that the SJ wheel will polish your edge bevel, but it won't make the knife sharper. 

[cbwx34]

I think what CB is saying is that the SJ wheel will polish your edge bevel, but it won't make the knife sharper.

Yeah, pretty much... I think it could, but not enough to make it worth it, unless you're sharpening for a specific purpose.  It mostly changes the appearance.

[3D Anvil]

I think what CB is saying is that the SJ wheel will polish your edge bevel, but it won't make the knife sharper.

Yeah, pretty much... I think it could, but not enough to make it worth it, unless you're sharpening for a specific purpose.  It mostly changes the appearance.

My experience is that I don't get a *sharper* edge, but it is a more refined, less toothy edge, which might be preferable for things like fileting fish, or slicing sushi.  Also, sometimes you just want a shiny edge!

Something to keep in mind is that the SJ wheel doesn't do much with high vanadium, wear-resistant steels.  The vanadium carbides are harder than the abrasive in the wheel.

[John Hancock Sr]

I heard that a sharper edge, ie one which has been sharpened to a higher grit, will stay sharp longer. This is due to the higher consistency of the edge. The post below from Sharpening supplies bears this out.

When you see Japanese planes taking ultra fine shavings with very little force one of the things that enables then to do that is irons that have been sharpened with a super high grit.

Given this the JS should provide a more resilient edge. Having said that it depends on what you are using the edge for and how much extra work is involved. Yes, the SJ will give you a sharper more durable edge but whether that is what you want depends on what you are doing with the edge.

https://www.sharpeningsupplies.com/blogs/articles/is-a-sharper-edge-stronger

[3D Anvil]

I believe that Larrin Thomas has done some testing on edge retention versus grit, and my recollection is that the best results over all came with a 600 grit finishing stone.  I think it depends somewhat on the particular steel.

[truthrider]

Thanks for the info. I'll save the money and pass on the SJ stone.

 I've done some searching but have not been able to find a rock hard felt for the t4. Is anyone aware of one available in the US?

Marty

[Ken S]

Marty,

One possibiity is that any grinding or felt wheel that fits the T8 will also fit the T4. Just remove the water trough. Although the outer widths of the T4 and T8 wheels are 10mm different (40 and 50mm), with the wheel recesses, the width at the bore is almost identical. Thatminimal difference is easily picked up bythe EZYlock thread.

Ken

[tgbto]

Given this the JS should provide a more resilient edge. Having said that it depends on what you are using the edge for and how much extra work is involved. Yes, the SJ will give you a sharper more durable edge but whether that is what you want depends on what you are doing with the edge.

I thinks that's a very important part of what we're trying to do with a Tormek. For kitchen work where the blade works mostly in the direction perpendicular to the cut, I found that a polished edge that's initially "BESS-sharper" than one sharpened only on the SG will eventually feel dull faster.

If you're leaning on the geeky side of sharpening, this article along with this one on the scienceofsharp website are very interesting.

And I can't help but throw in this one as well that talks about burrs.

TLDR: The SJ will make for a very nice-looking bevel. But it will not really translate in better day-to-day performance.

[cbwx34]

...
 I've done some searching but have not been able to find a rock hard felt for the t4. Is anyone aware of one available in the US?

Marty

I ran across this website...

https://www.bestfelt.com/wheels

...they actually had a wheel on Amazon "for the Tormek T-8", so in theory at least, they could make one for the T-4.  (I haven't had any dealings with them myself.)