WhetGuide
Hands sharpening a chef's knife on a wet whetstone set on a damp towel

How to use a whetstone, step by step

Soak, set the angle, raise a burr, switch grits, remove the burr. That's the whole method. Here's each step in plain terms, plus how to tell when you're done and what to do when the knife still won't cut.

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To use a whetstone: soak it (if it's a soaking stone), set it on a non-slip base, hold the knife at a steady angle (around 15° for many Japanese knives, around 20° for many German knives), and stroke one side until you feel a burr along the whole edge. Repeat on the other side, then move to a finer grit and finish by removing the burr. The steady angle is the whole skill; everything else is routine.

What you need

Start with a 1000/6000 combination stone. It covers most kitchen knives, and the Sharp Pebble 1000/6000 and King KW65 1000/6000 have been the default choices for years.

  • A non-slip base (most kits include one), or a damp towel folded under the stone
  • A bowl of water or a spray bottle
  • A permanent marker for checking your angle. Optional, but it saves a lot of guessing.

Later you'll want a flattening stone for maintenance. Some kits, like the Sharp Pebble 400/1000, put one in the box.

This guide reflects standard, widely taught whetstone technique. We describe products from their listings and do not claim hands-on testing. How we research.

The method at a glance

The five steps of sharpening on a whetstone Five boxes in a row joined by arrows: 1 soak and set up, 2 find the angle, 3 raise a burr on side one then side two, 4 repeat on the finer grit, 5 remove the burr and test. 1Soak &set up 2Find theangle 3Raise a burrboth sides 4Finer grit,lighter strokes 5Remove burr& test Step 3 does most of the work. Don't move on until the burr runs the full length.
Five steps. Most beginners rush step 3 and wonder why the knife isn't sharp.

Step 1: Soak and set up the stone

Soaking stones (most budget water stones, including the Sharp Pebble and King) go in water until the bubbles stop, typically 10 to 15 minutes. Splash-and-go stones only need a splash on the surface; check the instructions. Put the stone on its non-slip base or a damp towel, coarse side up, with the long side pointing away from you. Keep the water close. The surface should stay wet the whole time.

A whetstone soaking in a dish of water with bubbles rising
When the bubbles stop, a soaking stone is ready.

Step 2: Find and hold the angle

Hold the handle in your dominant hand with your index finger on the spine or your thumb on the flat near the heel. Lay the blade flat on the stone, then raise the spine until you reach your angle. Many Japanese knives are sharpened around 15° per side. Many German and Western knives sit around 20°. If your knife maker gives a number, use theirs.

While you learn, use spine height as a check. A 2-inch-tall chef's knife at 15° has its spine about half an inch off the stone; at 20°, about two-thirds of an inch. Our angle chart has the full spine-height table. If you'd rather not eyeball it at all, a clip-on guide like the SHARPAL 194H sets the height for you.

Before the first stroke, color the bevel with the marker. Ink coming off evenly across the bevel means you've matched the existing angle.

Step 3: Sharpen side one until you raise a burr

Place two or three fingertips of your other hand on the blade near the edge, over the stone. Push the knife forward and slightly sideways so the whole edge, heel to tip, passes over the stone, using moderate pressure on the forward stroke and lighter pressure on the return. Work in sections if the knife is long: heel, middle, tip.

Keep going until you feel a burr: a tiny lip of metal folded over to the opposite side. Feel for it by drawing your thumb gently across the edge from the spine side, never along it. When you can feel the burr along the entire length, side one is done.

A thumb checking across a knife edge for a burr
Feel across the edge, never along it. A burr feels like a slight catch.

Flip the knife. Same angle, same routine, until the burr flips back to side one. Counting strokes keeps the two sides even.

Step 4: Move to the finer grit

Turn the stone to the fine side (for example 6000), wet it, and repeat step 3 on both sides with lighter pressure and fewer strokes. This stage removes very little metal. It refines the scratches from the coarse side and shrinks the burr. Check the grit chart if you're unsure which stones to use.

Step 5: Remove the burr and test

Finish with a few very light, alternating single strokes on each side, then a few edge-trailing strokes on a leather strop or even across newspaper or cardboard. Test by slicing a sheet of printer paper: a sharp edge slices smoothly without snagging. A tomato skin is another good test.

Common mistakes (and fixes)

ProblemLikely causeFix
Knife isn't sharper after sharpeningNever raised a burrStay on the coarse side until you feel a burr along the full edge.
Edge is sharp in the middle, dull at the tipTip not reaching the stoneLift the handle slightly as you sharpen the curve toward the tip.
Edge feels sharp, then dull after one useBurr left on the edgeFinish with alternating light strokes and a few passes on a strop.
Wide, uneven, rounded bevelAngle wobbling between strokesLock your wrist, move from the shoulder; use a guide or the marker trick.
Stone surface is dishedAlways using the middleUse the whole length of the stone and flatten it regularly.

Keep the stone flat

Water stones wear into a shallow dish over time, and a dished stone makes it hard to hold an even angle. Every few sessions, draw a pencil grid on the surface and rub it on a flattening stone or coarse diamond plate until the lines disappear. Several kits include a flattening stone, such as the Intelitopia 400/1000 and 3000/8000 set, which also includes an angle guide and a leather strop.

A flattening stone being rubbed across a whetstone with pencil grid lines
When the pencil grid is gone, the stone is flat again.

If freehand isn't working

Some people never get comfortable holding an angle by hand. Don't fight it for months: a guided system clamps the knife and holds the angle while you use flat abrasives; see the best sharpening systems or our beginner sharpener picks. Still choosing stones? Our whetstone set guide compares the popular kits.

Technique reflects standard, widely taught whetstone practice; product details come from Amazon listings checked October 3, 2026. How we research · Affiliate disclosure

Questions people ask

How long do you soak a whetstone?
Soaking stones are usually soaked for about 10 to 15 minutes, or until bubbles stop rising. Splash-and-go stones, like many Shapton ceramic stones, only need water splashed on the surface. Check your stone's instructions, because over-soaking some splash-and-go stones can damage them.
Which side of the whetstone do I use first?
Start on the coarser side (the lower number, such as 1000 on a 1000/6000 stone) to sharpen, then finish on the finer side (6000) to polish. Use a coarse stone around 400 grit first only if the knife is chipped or very dull.
Do you push or pull the knife on a whetstone?
Both work. Many people sharpen with edge-leading strokes (pushing the edge forward as if slicing a thin layer off the stone) and use lighter pressure on the return. What matters most is holding the same angle on both strokes.
How do I know when I'm done sharpening?
You're done on each grit when you can feel a slight burr along the whole length of the edge on the opposite side. After the final grit and burr removal, the knife should slice paper cleanly without snagging.
Can you use oil on a water stone?
No. Water stones are designed for water; oil clogs them. Oil stones (such as many Arkansas or India stones) use honing oil. Diamond plates usually work dry or with water. Use what the manufacturer specifies.
How often should I flatten my whetstone?
Check it every few sessions by drawing a pencil grid on the surface and rubbing it on a flattening stone: any lines left are low spots. Softer, coarser stones dish faster and need flattening more often.