Jigs, Fixtures, & Modifications for the Tormek

Some really great add-ons have emerged lately for the Tormek, and this section contains a quick reference to those user-designed jigs, fixtures, and modifications.

Index of Known Jigs, Fixtures, & Modifications



KenJig

KenJig

The KenJig was one of the first add-on jigs made for the Tormek, and one of the easiest to use.

It is based on the Dutchman's guide for Grinding Angle Adjustment for the Tormek, and named after the Tormek forum's fearless leader, Ken Schroeder.


HanJig

Jan's Original Design

In December 2015, Jan Svancara posted on the Tormek forum an idea for modifying the TTS-100 to accommodate the setup of the universal support bar (USB) based on the a few pre-determined knife edge angles. What is truly great about this idea is that it accommodates changes in the grindstone's diameter.

Sheang Han (who goes by Tournevis on the Tormek forum) built a jig for that made of metal. His information was posted on the Tormek forum around February 2016.

This jig is a great story for the sharpener. It shows the progression of ideas :

  • Ken developed the KenJig for fast setup of the USB for sharpening knives.
  • Jan took that idea, and made it more universal to accommodate different angles and varying sizes of the stone.
  • Then Han made it a nice, simple design.
  • The last picture shows 4 HanJigs made by Rick Krung. His testing showed very strong BESS™️ ratings using these.

HanJig


Multiple HanJigs

The generally-accepted opinion is that the sharpener should decide to use the HanJig if sharpening a few knives with a specific angle (e.g., one or two at a time at a farmer's market).

If sharpening quite a few knives with the same angle (i.e., all your wife's kitchen knives), then the platform approach will be faster overall.


Laser Goniometer

Laser Goniometer

Jan Svancara's document on building a Laser Goniometer outlines a great way to measure bevel angles with a simple laser device.

This device makes those measurements very precise. And his use of kids toys (Erector Set) to make it lends to a bit of fun.


Goniostat

Goniostat in use
on a Bench Grinder

Sharpening certain tools requires angles cut that can be complex. To do this requires a Goniostat. The version I've made for use on a Tormek is shown here. It gets used for :

  • Single point cutting tools for use on a metal lathes : The accuracy of those cuts matters as a variation of only 2 or 3° can make a big difference in the tools effectiveness.

  • Cutters for the Rose Engine lathe

The original goniostat is shown below, and was outlined by Charles Holtzapffel in his 1850 book, Turning and Mechanical Manipulation, Vol. 3 - Abrasive and Other Processes not Accomplished with Cutting Tools. This was designed to work with a flat stone, though now these are used with flat spinning disks, and a newer variation of it is still available.

I made this sled to ride on the SVD-110 Tool Rest. It makes sharpening those tools quite a bit easier.


Goniostat - top & bottom views


Pivot Jigs for Tormek SVM Knife Jigs

Collar Pivot Jig


Collar Pivot Jig with the SVM-45 Knife Jig, version 1
The first version of this collar is shown on the right, and was published in 2018 on the Tormek Forum by CB. It makes for easier sharpening of knives as it allows for easier pivoting of the knife jig when sharpening. It is especially useful for keeping a consistent grind on the edge, especially for blades with curves (as most have).

This enhancement is made from four 12mm collars. The two that seem joined are held together by a 6mm-1.0 screw, and that is a pivot point.

I also use this jig for sharpening pruning shears, and it works well to allow for pivoting the knife jig along the blade's curved edge.


Pin Pivot Jig


Pin Pivot Jig with the SVM-45 Knife Jig
Later in 2018, Rick Krung published on the Tormek Forum an improvement to CB's design. This is shown in the 2nd picture on the right.

It is really quite nice, and has received (well-deserved) rave reviews, though it is a bit more involved to make as it requires a bit of machining and welding. I do like the simplicity of this approach, and the excellent work done by a great machinist.

The video below is from Knife Grinders showing the Mounting the Pin Pivot Collar on your Knife Jig.


Wedge Pivot Jig

Still later in 2018, Gord Cameron published on the Tormek Forum a different approach which had simplicity in fabrication as its governing principle. This is shown in the pictures on the right.

Gord is not a machinist, and stated that he wanted something that could be made by anyone with a hack saw, a file, and a drill press. He also wanted to design something that someone could make out of plastic, either by shaping it or by using a 3D printer, so he designed it to have more reinforcing bulk than the pin pivot collar.

The one shown is made from a bar of aluminium that is 2” long and 1” square.

The picture at the bottom shows this attached to the knife jig.



Wedge Pivot Jig with the SVM-45 Knife Jig


Platform for Sharpening and Honing

Simple Platform for Honing and Sharpening


Enhanced Platform for Sharpening Knives

Jan Svancara developed this simple jig for easier and more consistent honing and sharpening (first picture on the right), and the even more enhanced jig (2d picture on the right). The 2d picture also shows the laser he uses for alignment. (I love how Jan uses Erector Set toys to build jigs.)

I use a similar version for sharpening, and greatly love it.

Tony Whitfield (AKA, "Y-Not") posted an additional recommendation regarding the knife sharpening platform, in that he recommended putting a drop of mineral oil on the knife blade and the platform. This was posted in 2018 on the Tormek Forum as a way to reduce scratches on the edge of the blade.

Herman Trivilino's video below shows the use of a platform jig. His looks a little different, as he has affixed a piece of steel to the SVX-150 Scissors Jig (my variation of this is a piece of very hard plastic attached to the SVD-110 Tool Rest). In any case, the results are the same.


Rotary Knife Jig

Rotary Knife Jig - Drawing

Rotary Knife Jig - Side View

Rotary Knife Jig - Parts Exploded

I made this set of add-on parts for the SVD-185 / 186 Jig so I could sharpen rotary knives for my wife.

The pieces added are

  1. the hand wheel,
  2. the bolt to hold it in place, and
  3. the fender washers.

The videos below show the modified jig in use. The first video is using the SG wheel to sharpen the blade, and the second video is using the SJ wheel to hone it.


Software to Set Grinding Angle

Software Screen Shot

Vadim Kraichuk at KnifeGrinders has developed an application for Windows, Mac, and Android software to set grinding angles on Tormek T-4, T-7, T-8 and SuperGrind 2000 standard position (grinding into the wheel), other similar brands (Scheppach, Jet, Record etc), using jigs.

The video below is from Knife Grinders showing the Grinding Software in use.


Volume Sharpening Attachment

Volume Sharpening Attachment

Vadim Kraichuk (at KnifeGrinders) and Rick Krung devised this jig for use on diamond grindstones. It is a great tool for production sharpening shops.

Photos, detailed descriptions, and production drawings are on the KnifeGrinders web site.

The video below is from Knife Grinders showing the Volume Sharpening Attachment in use.