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Hi all,

I have two Tormek diamond wheels, course and fine. I also have SG-250 wheel which has never been graded course, so it still has the 250 mm dimension since I only use it as the final step after the diamond wheels, used as Tormek Japanese water stone, if you will, but with courser grit.

Many times DE-250 (grit 600) is the final step, this give me good enough result.

Wanted to ask you all if you see any reason to have the 1200 grit diamond wheel, as long as my SG-wheel keep it's dimension but also remains true?

To my eyes the result from SG-250 (graded very fine, with a finer grit than the fine git side of the Tormek grading stone) gives a beautiful edge to finalize on my leather wheels.

Is there any practical or theoretical pros with using diamond (or CBN) as the last step of sharpening super steel's like m390, rather than traditional aluminium oxide stone?

I I'm aware that deburring on diamond can give high vanadium steels better edge retention.

Thanks!

I stripped my KS-123 down, cleaned it thoroughly, and just applied a wee bit of PTFE grease on the pivot area. So far after a few months of daily use, it's been pretty smooth.

I did exactly this, with success.

I'm gonna guess you're thinking of how to economise the use of your ACC-150 solution?

Whenever I clean my diamond grindstones in my ultrasonic cleaner with just water and dish soap, I rinse them with water to remove all soap.

Then I mount the grindstone on my T8 and spin them for a bit in the trough filled with the ACC-150 solution. I do it just to coat it with the solution, then I let it drip dry before storing it.

If you're drying off your grindstone after using just water, you'll need to access the hollow section under the plastic cover, and that is where corrosion may form without you knowing.

Also, if you're using just water, you roll the dice if you encounter knife steel that flash rusts quickly, getting embedded in your grindstone and causing rust spots all over, no matter how fast you dry it after.

hello Royale! Not so much the economy, but rather the hassle of minding the water.

You're totally right, first I thought of removing the plastic sides so I could make sure it was dry, but yesterday I found a container that fits the wheel in which I rinse the wheel for a moment after each use. I believe I got the idea from a another post you wrote some time ago.



Thanks!

Maybe a stupid question, but has anyone tried using diamond wheels without the agent and after each sharpening session make sure to dry the wheels with a hairdryer and towel?

Old thread and I know Vadim is not with us anymore, which is very sad.

I have question. I'm about to sharpen a M398 knife and wonder if a final strop with PA-70 will do more damage than good after using my other leather wheel with 5 micron diamond paste?

Thinking PA-70 is finer than 5 micron.

Thanks

Thanks to Royale I canceled the order, it didn't make sense.

Thank you Royale, that is really useful info!

I'll sleep on it and get black when I know.

Funny thread!

I have all 3 diamond grindstones for my sharpening business.

I typically use the DC-250 (360G) to reshape/reprofile blades, and sharpen with the DF-250 (600G). Only when the customer wants a finer edge (and willing to pay more), do I use the DE-250 (1200G)

From personal experience... Going from the DC-250 to DE-250 is going to add a lot of time to your sharpening. Some factors to be considered are hardness of the steel, and what level of sharpness you're trying to achieve.

I spend most of the time at the DC-250, lesser time with the DF-250, and the least time with the DE-250.

So it's definitely a possibility, but the time take  is going to be hella long.

Great input, thanks!
Maybe I should replace the DE for for an DE. For how long have you owned the DC, does it keep its 360 grit spec well since it was broken in?

I guess I was thinking that I could use the DE to get rid of most om the burr from DC, and that I could live with the scratch pattern DF-250 otherwise would have lessened.

Also on more traditional and high carbide knives, rather than m390, s30v, my plan was to use SG-250 as course as possible as first step and than DE before honing.

But I guess I'll end up with the DF as well.

Hello all,

I got a good deal on these two Tormek diamond wheels and do mostly knife sharpening for myself, friends and colleagues.

While waiting for the wheels I thought I'd ask here if anyone has experience skipping DF (fine) the stone between the two? I know the scratch pattern differs from the original stone, with which I often go from course to the leather wheel.

I have owned DF (400 grit) once and found it very effective and thought I'd try jumping from 360 (DC) to EF which I believe is 1000 grit, before going all in on three wheels.

Much interested in your thoughts on this.

Cheers!

This thing was a game changer for me. It's so much quicker and more fun to sharpen knives since I got it. KS-123 made me sell my diamond stone, invest in a second machine. It is very nice not having to remove either the stone or the honing wheel.

I'm a tormek newbie and would say that my SP-650 is very young. I have noticed that it takes longer to achieve low grit than it did when it was new. The fine side still seem to be as effective as it was when it was new. I can clearly see the ..snip ...............snip..
SP-650 might be the best allround grader in the long run, but when it comes to sharpen and re profiling knives with 58-60 HRC, the 150 grit diamond stone has been great.

 I'd love to hear your thoughts on this.

Thanks!

I think you are correct.

A couple of things you can try with your SP-650... I've roughed mine up using a nail or an old screwdriver, just scraping the surface to freshen it.  You can also use the edge of the stone for the last few seconds of grading... just rotate it a little until the edge is making contact with the wheel.

But several on here have used diamond stones to grade the stone with good results.

Thanks for the reply! Yes that's exactly what I did, using the edge to make it a little more aggressive again!

I guess you would recondition the conditioner as you would any whet stone, so a diamond plate, as CB suggested, or you could use sic powder or playground sand on a glass or granite plate.

Great tip, I'll try that, thanks!

I'm a tormek newbie and would say that my SP-650 is very young. I have noticed that it takes longer to achieve low grit than it did when it was new. The fine side still seem to be as effective as it was when it was new. I can clearly see the coarse side of the SG is getting more shiny. Is there a easy way to get the rough side back?

I have a 8" 150 grit diamond plate that I got from a respectable knife shop in Stockholm. This shop sells fancy kitchen knives and Shapton stones and the 150 grit diamond stones is for stone flattening. The thing is that it is way more effective than the coarse side of SP-650. I apply very light pressure  when grading and the result is really good. It seem to hold up well for this particular use, way better than my DMT DiaSharp stone, that got big shiny spot when it touched the SG-250. Im very skeptical towards DMT after this.

I suspect that the light pressure used with my diamond stone doesn't get me all the way to 360 grit, but very swift to maybe 5-600 grit. This might sound strange, but even if the result from the diamond stone gives somewhat higher grit, it feel so much more aggressive, in a good way, compared to what i get with a new SP-650.

SP-650 might be the best allround grader in the long run, but when it comes to sharpen and re profiling knives with 58-60 HRC, the 150 grit diamond stone has been great.

 I'd love to hear your thoughts on this.

Thanks!

Looks good (what did it look like before?)... you should post how you did it.

You're right.

I feel a little stupid really, since i'm just a hobbyist but i got an impulse last week and purchased a T8. My plan was to sell my T4 and my DF-200. But instead i moved the T8 honing wheel and MB-102 to my T4 and i was sold, since i mostly sharpen knives.

It's even more fun when i don't have to lift off the stone while honing.

The T8 Org isn't cheap, but i must say that it is for the most part a better deal than T4 Org. I do love the water trough lift, so convenient and the wider stone area 50 mm instead of 40 mm makes a big difference.

Also the footprint isn't much larger than the T4.

EDIT:
I just made this - Mora Tanto. For the things I use this kind of knife for, I do think I'll prefer the tip like this.