The Robert Sorby ProEdge offers effortlessly repeatable sharpening every time. Sharpens bench, framing, carving and turning chisels, drill bits, plane irons, knives and garden tools. It is not used to sand wood. Please use our bigger belt sander for this.

An induction is required to use this machine; You will find the link at the bottom of this page. Once you have passed the online induction, you will be given the code to unlock the power plug.

It is vital that eye protection and a form of dust mask are ALWAYS worn and a dust extraction system is in operation. Ensure loose clothing and long hair are kept well away from any moving parts. Maintain a clean working environment when operating grinding and sharpening systems as sparks from this type of equipment are extremely hot and can cause a fire if they get onto wood dust. Always switch off and disconnect from the wall socket mains electric supply before changing belts or jigs or making any adjustments to the system.

As per Hackspace code of conduct, always clean up after use – return all belts and jigs to the designated spot on the shadow board and sweep up any metal filings and put them in the appropriate bin. If there is any damage the machine or missing parts/belts/jigs, please make it known to other members via the google group.

We have two knife jigs; Large (for knives above 8”) & Small (for knives up to 8”)

  • 60 grit
  • 120 grit
  • 240 grit
  • 600 grit
  • Leather honing belt (must be used with paste)

To assist in sharpening tools the ProEdge has a very useful feature in that the sharpening belt assembly can be angled backwards to allow for a much more comfortable position when sharpening at shallow angles.

This is done by loosening the two screws next to the drive pulley and gently moving the belt assembly to your desired angle. When the belt assembly is tilted backwards the rear screw is accessed via the access slot in the side guard as shown below. When the desired angle is achieved, re-tighten the screws to secure the belt assembly in place.

All woodworking tools and knives are usually tempered. This is the process of heating a tool to an extremely high temperature and then dipping it into water. This is done to harden the metal which makes it more durable.

If we allow our tools to heat up too much as we sharpen them, we are ruining this temper and in turn, reducing the durability of our tools.
For this reason, it is vital that you do NOT let the tools heat up too much.

There are a few techniques with will stop the tool from heating up too much when you are sharpening it.

  • Do not hold the tool against the belt for any longer than a few seconds at a time.
  • Do not press the blade into the belt as you sharpen, just allow for light contact.
  • Try dipping the tool into cool water between passes on the belt to keep the temperature down.

The diagrams below show details of the angles and profiles supplied on Robert Sorby tools.

The images are broken into four sections from left to right.
1. A general view of what the tool looks like.
2. An end view showing the actual cutting edge profile.
3. A top view showing the shape of the cutting edge as seen when using the tool, together with any relevant profile angle.
4. A side view with the recommended bevel or clearance angle depending on the type of tool being sharpened.

The diagrams below show all the views as described above but with the addition of the two showing the primary and secondary bevel angles depending on the type of wood to be worked.

Please refer to the angle setter information guide on the front of the system for more recommended bevel angles.

Please click the link below to complete the induction test

  • equipment/robert_sorby_proedge
  • Last modified: 7 months ago
  • by davek