Whetstone Sharpening Guide
Every knife loses its edge eventually. It happens slowly, so most people do not notice until the tomato squashes instead of splitting. The good news is that bringing the edge back takes about twenty minutes, and you only need to do it a couple of times a year.
If sharpening on a stone sounds like something reserved for chefs, it is not. The hardest part of the whole process is holding the right angle, and the guide in the box does that for you. Here is how it works, start to finish.
What comes in the box
Your Kanzo whetstone set includes three things:
- A dual-sided #1000 / #6000 whetstone. The coarse side sharpens, the fine side polishes.
- A 15° angle guide that clips onto the spine of your knife.
- An anti-slip wooden base to hold the stone steady while you work.
That is everything you need, plus a bowl of water and a towel.
Prep: Soak the whetstone
Fully submerge the stone in water and let it soak for 10 to 15 minutes, or until bubbles stop rising from it. A properly soaked stone cuts cleanly and lasts longer, so do not rush this part. Put the kettle on and come back to it.
Prep: Attach the angle guide
Clip the angle guide onto the spine of your knife. This is the piece that solves the hardest part of sharpening. With the guide in place, laying the knife flat against the stone holds the blade at a consistent 15° angle, which is the edge your knife left the workshop with.
No guesswork, no eyeballing it. The guide holds the angle so you can concentrate on the strokes.
Step 1: Sharpen on the #1000 side
Set the soaked stone in its wooden base, coarse side up. Rest the knife flat against the stone with the guide touching the surface.
Use forward and backward strokes, making sure the full length of the blade passes over the stone. Keep your grip firm but relaxed and let the stone do the work. Pressing harder does not sharpen faster.
Give it 10 to 20 strokes, then flip the knife and do the same on the other side.
How do you know when it is done?
You are working towards a burr. That is a tiny fold of steel that forms along the edge when one side has been fully sharpened.
To check for it, carefully run your thumb across the edge, spine first, never along it. You should feel a faint catch or lip, as if the steel has folded slightly over. Once you can feel the burr along the whole edge, move to the next step.
Step 2: Refine on the #6000 side
Flip the whetstone to the fine side and add a splash of water to dampen the surface if it has dried.
Now use light, finishing strokes, around 10 to 20 per side. This stage removes the burr and polishes the edge. You will feel the resistance fade as the blade starts to glide.
Finishing touches
- Remove the angle guide and wipe the blade clean of water and residue.
- Rinse the whetstone gently under warm water to clear the sides of any slurry.
- Dry both fully before storing. A damp stone in a cupboard is how you get mould.
The result
A burr-free edge glides through food without resistance. The onion falls apart under the blade instead of sliding away from it, and prep goes back to being the calm part of the evening.
Sharpened this way, your knife should hold its edge for another 3 to 6 months of regular cooking before it needs the stone again.
Any questions, get in touch at support@kanzokitchen.co.uk. We are happy to help.
