How to Use a Knife and Sword Sharpening Stone (and How to Choose One)

A sharpening stone does one thing: it removes a small amount of steel to rebuild the edge. That is the whole trick. Everything else, the grits, the water, the angle, the stropping, exists to control how much steel comes off and how cleanly the two sides of the edge meet. This guide covers how to choose a stone or a kit, how to sharpen step by step, what changes between 1095, Damascus, and stainless steel, and how to care for a blade afterward.

Sharpening and honing are not the same job

Honing straightens an edge that has rolled slightly out of line. It removes almost no metal, and it is what a honing rod does between sharpenings. Sharpening grinds a new edge when honing no longer helps. If a blade still bites but feels inconsistent, hone it. If it slides off tomato skin or folded paper, it needs the stone.

Choosing a sharpening stone or kit

Stones differ mainly in what they are made of and how coarse they are.

• Water stones cut fast and are the most common choice today. They are soaked before use, and the slurry that forms on top does much of the cutting. Our own double-sided sword and knife sharpening stone is this type, with a 1000 grit side and a 6000 grit side on a non-slip bamboo base.
• Oil stones cut slower, wear slower, and use a light coat of mineral oil instead of water.
• Diamond plates cut the fastest, never need flattening, and handle very hard stainless steels well.

Grit numbers tell you how much steel a stone removes. A coarse stone (roughly 220 to 400) is for repairing chips and reshaping a badly dulled edge. A medium stone (roughly 800 to 1500) does the actual sharpening. A fine stone (3000 and up) polishes the edge afterward. A two-sided 1000/6000 stone covers normal maintenance for almost every blade in the house, which is why kits are usually built around that pairing. Beyond the stones themselves, a useful kit adds three things: an angle guide for beginners, a flattening plate to keep the stone's surface true (a dished stone sharpens unevenly), and a leather strop for the final touch.

How to sharpen, step by step

1. Prepare the stone. Soak a water stone for five to ten minutes, until it stops releasing air bubbles, and set it on a non-slip base. For an oil stone, spread a thin coat of mineral oil instead. Never mix water and oil on the same stone.
2. Find and hold your angle. Most kitchen knives sharpen at about 15 to 20 degrees per side, hunting and outdoor knives at about 20 to 25, and working swords a little steeper still depending on the blade. If you are unsure, use the marker trick: color the edge bevel with a marker, take two light strokes, and look at where the ink is gone. Ink removed only at the very edge means the angle is right. Ink removed above the edge means you are too shallow; ink untouched at the edge means too steep. An angle guide removes the guesswork entirely.
3. Work the coarse or medium side first. Push the blade across the stone edge-first, as if slicing a thin layer off the top, keeping the angle steady, and cover the full length of the edge with even strokes. Sharpen one side until you can feel a fine burr, a thin curl of steel, along the opposite side of the edge. Feel for it by brushing your thumb across the edge, never along it.
4. Switch sides and repeat. Raise the same burr on the other side with the same number of strokes, then alternate a few light passes per side to chase the burr down until it is nearly gone.
5. Finish on the fine grit. Repeat the same alternating strokes on the 3000 grit or finer side with lighter pressure. This polishes the scratch pattern and aligns the edge.
6. Strop. A dozen trailing strokes per side on leather, moving spine-first so the edge drags behind, removes the last traces of the burr. Cardboard works in a pinch.
7. Test and clean up. A sharp edge slices printer paper cleanly from a shallow angle. Rinse a water stone and let it dry completely before storing it, and wipe the blade free of steel dust and slurry.

Sharpening by steel type

The technique above works for all three steels we forge with, but each behaves differently on the stone. The full background on all three is in our sword steel guide.

1095 high carbon steel

1095 is the easiest of the three to sharpen. It takes a keen edge quickly on a 1000 grit stone and responds beautifully to a fine polish. Its one demand comes after sharpening: 1095 rusts if neglected, and a freshly ground edge is bare steel. Dry the blade completely and wipe on a light coat of mineral oil before it goes back in storage.

Damascus steel

Sharpen Damascus exactly like 1095: the folded layers are carbon steel and the edge behaves the same way. The difference is cosmetic and it matters to collectors. The watery pattern you see is an acid-etched surface finish, so keep the stone on the edge bevel and off the flats of the blade, because coarse grit scratching the flats will dull the pattern. The bevel itself brightening as you sharpen is normal and unavoidable. If the flats ever lose their contrast from scratches or polishing, the pattern can be restored with a re-etch, which we cover in the care section of the steel guide. Oil Damascus after sharpening just as you would 1095.

Stainless steel

Stainless holds its edge longer between sessions and resists corrosion, but the same wear resistance makes it slower to sharpen. Expect more strokes per side than on 1095, and if you maintain harder stainless blades regularly, a diamond plate speeds the coarse work considerably. Stainless will not rust in normal conditions, but dry it before storage all the same.

Sharpening a sword on a bench stone

A sword is sharpened with the same motion as a knife, just in sections. Secure the blade or brace it against a stable surface, work the stone through overlapping sections from guard to tip on one side, raise the burr, then mirror the work on the other side. Keep your free hand behind the edge at all times and slow down near the tip, where it is easiest to round off the point. A large stone like an 890 gram bench stone makes sectioned work much easier than a pocket stone. One honest note for collectors: display pieces do not need a working edge, and many owners deliberately leave them unsharpened. Sharpen the blades you actually cut with, and let wall pieces stay as they are.

After you sharpen

Wipe the blade clean of slurry and steel dust, dry it fully, and oil carbon steel (1095 and Damascus) before it goes back in a sheath or on a stand. Store stones dry, flatten them when the surface starts to dish, and they will outlast most of the blades they sharpen.

Frequently asked questions

How often should I sharpen?

When honing stops helping and the edge no longer bites paper or tomato skin cleanly. For most kitchen and field use that is a few times a year, with honing in between. Sharpening more often than needed just removes steel for nothing.

Is a whetstone different from a sharpening stone?

No. They are the same thing. Whet is an old word meaning to sharpen; it has nothing to do with water, which is why oil stones are whetstones too.

What grit should I start on?

Start on 1000 for routine sharpening and finish on 3000 or higher. Only drop to a coarse stone if the edge is chipped or badly worn.

Does Damascus need special stones?

No. Use the same stones you would use for 1095. Just keep the abrasive off the flats to protect the etched pattern, and oil the blade afterward.

Can one stone handle both knives and swords?

Yes. A full-size bench stone handles both; swords simply get sharpened in sections along the edge. Small pocket stones are the only ones that struggle with long blades.

Should I sharpen a display sword?

Usually not. A working edge adds risk in handling and adds nothing on a wall or stand. Most collectors keep display pieces unsharpened and reserve the stone for blades they actually use.

Ready to put an edge back on something? Our double-sided 1000/6000 water stone covers the whole routine above, and the rest of our maintenance gear lives in the sword and knife accessories collection.