How to Sharpen a Santoku Knife With a Rolling Sharpener

A Santoku knife usually responds well to a consistent, sharp kitchen edge. With HoneyHone, start at 15° for a sharp kitchen-knife setting, keep the blade steady on the magnetic guide, and work from the grit that matches the edge’s condition.

HoneyHone is designed for most kitchen knives and works best with straight or slightly curved blades. Before sharpening, make sure your Santoku sits securely against the magnetic angle guide and that you can roll smoothly along the full edge.

Choose a practical Santoku sharpening angle

For a Santoku used for normal kitchen prep, 15° is the natural starting point in the HoneyHone system. It is one of the approved settings for sharp kitchen knives and Santoku knives.

If you use the knife for more general-purpose work and prefer a little more durability, 18° can be a practical alternative. The important part is not chasing a different setting every session. Choose the angle that fits the knife’s job and keep it consistent.

Need help deciding between common kitchen settings? Read the 15° vs. 20° knife angle guide before you begin.

Set up the rolling sharpener

1. Place the Santoku against the button magnets on the side of the pentagon base that matches your chosen angle.
2. Attach the grit pad you plan to use to the roller. HoneyHone pads snap on magnetically, so there are no screws to manage.
3. Set the base on a stable work surface and check that the knife is held firmly before making a pass.

The magnetic guide is there to remove the angle guesswork. Let it hold the knife steady while you focus on a smooth, even roll.

Choose the right starting grit

Use the coarsest pad only when the edge needs it. HoneyHone’s #240 diamond grit is for reprofiling or repair. For routine sharpening, start finer when the edge is dull but not damaged, then move progressively through #400, #600, and #1000.

Use light, controlled passes rather than trying to force a fast result. A repeatable process is more useful than heavy pressure.

For a fuller walkthrough, see the grit progression guide.

Roll evenly along the edge

Roll the cylinder smoothly back and forth across the edge. Keep the knife in the same guided position and give the whole edge similar attention. The goal is an even result from heel to tip, not extra work in one favorite spot.

Check your progress as you go. If the knife is simply tired from everyday prep, do not treat it like a damaged edge. Move to the finer pads once the edge has improved instead of staying coarse longer than needed.

Finish with the fine pad and strop

After the diamond grit progression, finish with the #5000 whetstone-style pad. Then use the included leather strop for final polish. This finishing stage is where a sharp edge can feel smoother in normal slicing.

When not to force it

HoneyHone is not for serrated knives. If a particular knife will not sit securely on the guide, stop rather than trying to improvise a risky setup. The tool is designed to make sharpening more controlled, not to turn every blade shape into a guaranteed fit.

Bottom line

For an everyday Santoku, start with 15°, use only as much coarse grit as the edge needs, work through the finer pads, and finish with the #5000 pad and leather strop. A guided HoneyHone rolling sharpener makes that routine easier by holding the knife at a chosen angle while you roll.