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Messages - Pietje

Knife Sharpening / Re: Angle Dissmis
January 31, 2024, 02:47:52 PM
Quote from: tgbto on January 29, 2024, 05:16:27 PMHi. In any case, if you take the arcsine of (J6/2)/I6, you already have the angle in dps (degrees per side), which is what TormekCalc uses, or half the total edge angle. So why would you again divide the result by 2 ?
I divided with 2 because in my TormekCalc V2.70 the raw is named cutting angle and not grinding angle.
Knife Sharpening / Re: Angle Dissmis
January 29, 2024, 02:40:24 PM
  (What is "brideness"?)  The sharpening angle is not based on this.

ARCSIN. An angle function of Excel.
Knife Sharpening / Re: Angle Dissmis
January 29, 2024, 02:37:32 PM

I use a laser goinometer but there is at no time the angle, I tried to gring.
It would be hard to say without knowing more... but I wonder if the issue lies elsewhere, and your fix was just a coincidence.  For example, aren't most goniometers only accurate within a couple of degrees?
You are right.I dont know the tolerances of the goinometer.
Can this be the solution?
Knife Sharpening / Re: Angle Dissmis
January 25, 2024, 04:29:29 PM
I was thinking in the way, you are thinking.
I use a laser goinometer but there is at no time the angle, I tried to gring.
Knife Sharpening / Angle Dissmis
January 24, 2024, 08:57:02 AM
I had the problem, that adjusting the T8 to 15°, the knifes angle was different. Thats because the thick of the blade and the brideness of the blade make a dissmis of round about 1,4°.
So I made a formula for the TormekCalc Excel sheet in this way:


Z6 is the angle I like to grind.
J6 is the thicknes of the blades back.
I6 is the brideness of the blade.
Quote from: 3D Anvil on August 29, 2022, 06:05:47 AM
I have a machete with 16.5" of sharpened blade and the extended USB is long enough to accommodate it.  But, as you mentioned, there is the issue of the big belly towards the tip.  If I was going to sharpen the machete on my Tormek I would do the long, straight section and then reclamp and sharpen the belly separately -- almost like sharpening a huge tanto blade.
Hey there!
There is a toolbar with 65cm lengh availeble at There is also a doublejig. International shipping is possible. I have this long toolbar. It works fine. But using the full lengh needs attention to the Tormek jig. The black screwhead hits the two vertikal bars.

Solinger dünnschliff is very exciting.
I have it on an Wüsthoff Chefknife 205 and on a Wüsthoff Nakiri 165.

The german Godfather of grinding is

Jürgen Schanz
Karlsfeldstrasse 13
D-76297 Stutensee
Tel: +49-(0)7249-95 25 09
Fax: +49-(0)7249-43 79

The Homepage is also in English.

The dünnschliff is about 25 € for each of my knives.
Knife Sharpening / Re: convex edges
August 01, 2022, 12:15:19 PM
Hi Ken!
With the KJ-jigs it is possible to test it on knives.
My Zwilling Cleaver works very well with vegetables after putting on a 12° convex edge.
My Tojiro Santoku didn´t benefit of the convex. I had to grind the standart edge for 12°.

Hi Ken!
The industrial rule of construction is:
A hole can only be greater and a shaft can only be smaller. Thats ISO.

Hi highpower!
It is the link user cbwx34 has posted.
For the offered solution in this video I have a different point of view.
You may loose your 8-year garantee grinding the shaft.
If you have only one Tormek T8 my way is to hone up the hole of the disc.
with a reamer and special honing oil or with a adjustable handreamer you will get an proper hole with a diameter you need.

Your method beware you from a lot of problems. Thats good.

What do I mean:
A lot of users in this forum have reported, that the stone is tumbling right-left.
I have a problem with truing the stone.
Another of my problems is, that the stone goes up and down. My other discs do not have this problems.

Both failures seems to me are grounded in an incorrect centerhole, because the other discs are workung well.

Tormek told my to put the stone always with writing up at 12 o´clock.

For this high price Tormek has to fit a bushing in the stone to center the stone correct.
But Tormek seems also having a problem with the quality control.
On YT is a video that the diameter of the shaft is not 12mm +0,000. It is 12,001 so the CBN discs Schleifjunkies is selling doesn´t fit to custumer machines.
In my sight this is a scandal.
For machinebuilder there is a ISO standart, called ISO Einheitswelle / Einheitsbohrung. (Sorry, didn´t find a translation.)
It helps engeneers to secure a proper fit of pin and hole. There are three kinds of fitting. Strong, soft and gentle.
With this bushing of the waterstone they bring a problem from the custumer back to their plant.

The shaft doesn´t have the centering holes at the ends so a custumer cann´t correct the shafts diameter.

So long
Quote from: TireguyfromMA on February 19, 2022, 10:51:20 PM

With that said, can anyone advise me if the FVB jig is still available to purchase?  I see this as the next tool I must have for my T8.


Lokk also at
I didn´t got it dull. But only since 6 month. Ask the forum for the standing.
But the anticorrosive liquid is expensive over the time. Better look vor CBM Discs.
And no japanese Waterstone! Look for a CBN too.
Look at
He sends internalional wide.

Good luck

Quote from: JustADudeInSweden on January 27, 2022, 01:05:00 AM

curious to know if you (who sharpen many knives per day) do the above for each knife or do something like:

I thought in the same way like you.
I solved it by buying a diamond wheel 360 for the first grinding, so the standart stone is always prepared to 1000.
Hi folks!
That was new to me.
The SJ-250 has to be mounted only with writing upwards.
If you do not so the rotation of the dics is not correct.
That´s the info from Tormek Customer Service.

For me that´s trash. So my next wheel is a CBN with 6µ.