Edge Pro Inc., Precise Hand Sharpening SystemsEdge Pro Inc., Precise Hand Sharpening Systems

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Sharpening Tips

Sharpening Tips

Our Apex and Professional sharpening systems do exactly the same sharpening job on any knife. The Scissor Attachment only fits on the Pro and not the Apex. The Professional model is adjustable to work height, allowing you to stand straight and sharpen. This makes sharpening for long hours more comfortable. It is recommended that commercial sharpeners purchase the Professional model.

The Apex is smaller, lighter, and more portable. It is a great machine for home kitchen use, hunting, and fishing. Both machines have a lifetime guarantee.

Professional Model

1. Important Note to Customers

When you re-profile to a very low angle you wind up with a very wide bevel that is very difficult to get sharp, and it leaves you with a very weak edge. Instead, keep your primary bevel up at 19 degrees or higher and put on a second bevel between 10 and 15 degrees. You can make you primary bevel very small, like 25 or 30 thousandths wide. Now the knife will re-sharpen in seconds with only a very fine stone or even a tape. This will make the knife cut with such little effort it will amaze you. Also note, this is not a micro bevel. A micro bevel is achieved with the ceramic hone.

Second Note to customers: If you are sharpening a flexible blade, move the knife across the machine as you sharpen. If you are sharpening a stiff blade, put the knife across the machine and sharpen the whole blade without moving the knife. This will give you perfect tracking and a slight angle gain at the tip, which helps minimize the wide bevel that develops at the end of the knife. The wide bevel develops because as you get closer to the tip, the edge of the knife moves in to a thicker part of the blade.

2. Serrated Knives

  • Put felt marker on the flat side of the edge.
  • Set the PIVOT as low as it will go.
  • Use a 400 stone, and slide the stone across the knife.
  • Set the PIVOT so the stone is making a cut, (the full width of the serration.)
  • [If you are using an Apex, you may need a lower angle than you can set. For this, slide a piece of cardboard under the KNIFE GUIDE. Let is stick out 1/8". Set the back of the knife on the cardboard. This will tilt the blade and give you the lower angle you need.]
  • Make a light pass down the blade and make sure the stone is cutting the full width of the serration.
  • If needed, reset the pivot. Turn the knife so the points are pointing up into a good light. You will see shiny spots on the pips of the serrations.
  • Continue sharpening until the shiny spots begin to disappear.
  • Stop sharpening before you get any burr on the tips.
  • Finish by running a ceramic hone through each serration to remove any burr in the serrations.

Related video:

Sharpening a serrated knife

3. Chisel Grind

  • Set the PIVOT to the factory angle on the bevel side of the knife.
  • Sharpen to the stone or polish tape you are going to finish with.
  • If you do not want to make any marks on the FLAT side of the blade, put a piece of painters tape on the FLAT side at the TOP of the blade.
  • To remove the burr, use the stone or tape you used to finish the bevel side.
  • (This last step, you will do free hand) Lay the stone flat on the flat side of the blade. The stone will ride on the tape and the edge, and will not scratch the knife.
  • Slide the stone back and forth at 90 degrees to the edge. This will remove the burr.
  • Check to see the burr does not re-appear on the bevel side. If it does, make a light pass on the bevel side, and run the stone down the flat side.
  • As the edge gets dull you can bring it back with the ceramic hone. Just remember to run very close to flat on the flat side.

4. Re-Curve Blades

  • These knives have a concave shape to the blade
  • If the concave is shallow you can sharpen it with the standard 1" wide stones.
  • If the concave is deep or has a sharp curve, then you will need the 1/2" wide stones.
  • You can cut the bevel in with the 1" stones, but you will need the 1/2" stones to get a good finish.
  • For practical reasons, purchase the stone you will be finishing with in 1/2".
  • 1/2" polish tapes are also available for a polished edge.
  • If you are just going to use your 1" stone, it really helps to round the edges of the stones with a diamond, sand or silicone carbide.

Purchase 1/2" stones

Related video:

Sharpening recurves and tantos

5. Tanto Blades

  • Place the knife straight across the BLADE TABLE.
  • Set the PIVOT, and start to sharpen the main part of the edge.
  • Use a felt marker to check the angle not the front bevel. Often it is much steeper than the main bevel.
  • However, if it is close, it will raise the PIVOT just enough to be able to sharpen the front bevel.
  • You should be able to do the whole blade at the same angle. If not, you will have to reset for the front bevel. If you can sharpen the front bevel without moving the knife. If the blade is too short to do this, then you can angle the knife across the corner of the KNIFE GUIDE with the front bevel just over the front edge of the BLADE TABLE.
  • The alternative is to use a RISER BLOCK so you can sharpen both edges without moving the blade.

Related video:

Sharpening recurves and tantos

6. Riser Blocks

  • The RISER BLOCK allows you to sharpen a short blade without moving the knife for perfect tracking.
  • Put on the GUIDE CLIP.
  • You will need a scrap of wood that is thicker than one side of the handle on the knife. You need to elevate the blade enough so the handle will clear the BLADE TABLE.
  • Cut out a piece of wood that is the length and width of the knife blade.
  • Lay the blade on the RISER BLOCK and mark the shape of the curve at the front of the blade and cut to that shape.
  • If the knife has thumb studs, notch the back corners.
  • Use painters tape to tape the RISER BLOCK to the front of the BLADE TABLE.
  • Bring the KNIFE GUIDE up against the RISER BLOCK and lock it in place.
  • If the GUIDE CLIP does not come up high enough to catch the back of the blade, put a piece of cardboard under it.
  • You can now rest the knife blade on the RISER BLOCK.
  • Sharpen the whole blade without moving the knife.

7. Ceramic Hones

Ceramics are recommended to finish the edge and to bring the edge back between sharpening. The Edge Pro is much stronger than a free hand sharpening edge. Therefore, using the ceramic hone will re-sharpen in seconds, up to 15 times, because it removes so little metal. The ceramic puts a micro-bevel on the edge of the knife, creating a very strong and sharp edge. Many customers wonder why we don't mount the ceramic hone in the machine. The reason is it must be used at a slightly increased angle, and with no pressure. This is very easy, and fast to do free hand. We do not recommend regular sharpening steels, as even the finest one will damage the edge. We used to recommend smooth steels to restaurants only because they kept breaking the ceramics. The smooth steel removes the micro-serrations. This creates a smooth edge, but is not as efficient.

Related video:

Polishing your blade

8. Crossover Chart

Crossover chart for Chosera and Shapton Stones to Edge Pro.

Conversion chart