Hey everyone, it’s Jake here, and I’m stoked to walk you through something I get asked about almost every single day at the shop: how to actually use a double-sided sharpening stone. I’m the guy behind the counter at the sharpening stones supplier where I’ve worked for 12 years—you might’ve picked up a Norton combination stone or a Shapton pro stone from me if you’ve stopped by. For as long as I’ve been doing this, I’ve seen beginners overcomplicate it, and even experienced sharpeners skip small steps that make their edges feel dull a week later. A lot of that comes down to not understanding why a double-sided stone works better than a single-sided one, and how to switch between its coarse and fine sides correctly. Sharpening Stones
First, let’s cut to what a double-sided sharpening stone is, because that’s where most people get tripped up. It’s literally two grits of abrasive material fused to the same base—usually aluminum oxide for budget-friendly options like our standard combo stones, or silicon carbide for faster, more durable ones, even a ceramic base for premium setups. The coarse side is for fixing messed-up edges: chips, nicks, blades that are so dull they can barely slice paper. The fine side is for honing that edge to a razor sharpness, the kind that’ll glide through a tomato without squishing it or slide through a piece of leather like butter. I tell new customers all the time: if you’re only using a coarse stone, your edge will feel sharp but it’ll chip and dull in two days. If you only use a fine stone, you’ll spend 30 minutes grinding out a nick that would’ve taken two minutes on the coarse side. That’s the whole point of the double-sided design—efficiency, no need to buy two separate stones.
Now, the prep step that almost no one talks about, and it’s make-or-break. You can’t just pick up a dry stone and start grinding. For every type of stone, there’s a soaking or rinsing rule, and get this: it’s not just for lubrication. For water stones (the most common double-sided ones for home use), you need to soak the stone in room temperature water for 5 to 10 minutes, right? Wait, not too long—if you leave it in for 20 minutes, the abrasive particles start to break down faster, and you’ll have to replace it sooner. Oil stones are different: they need a light coat of honing oil, not soaking, to prevent metal shavings from clogging the pores. And if you’re using a diamond double-sided stone? It’s dry, no soaking, no oil—just a quick wipe to remove dust before you start. Let’s be real, I’ve had customers bring back stones that looked like they crumbled because they soaked a diamond one. That’s a rookie mistake.
Next, the setup. You don’t want the stone sliding all over your counter, right? I keep a rubber non-slip mat under mine at home, it’s $5 at any hardware store, and it works way better than a damp paper towel that gets soaked and slips after two strokes. Your angle is non-negotiable here—this is the part that separates people who get a sharp edge from people who end up with a wonky blade. For most kitchen knives, the sweet spot is 15 to 20 degrees. Hunting knives, pocket knives, that’s 20 to 25 degrees. I tell beginners to use a cheap angle guide at first, or just hold the blade flat against your index finger, tilting it until the edge makes a straight line with your finger. If you’re too steep, you’ll wear down the top of the blade instead of sharpening the edge. Too shallow, and you’ll take forever to get any metal off, and your edge will be rounded, not sharp.
Okay, let’s get to the actual process, starting with the coarse side. This is where all the work happens. Lay the stone on your non-slip mat, pick up your knife. Let’s use a chef’s knife as an example, that’s what most people sharpen. Hold the knife with your dominant hand, grip the handle tight, and your other hand rests on the spine of the knife (the top flat part opposite the edge) to keep the angle steady. You’re not pressing hard—no need to bear down like you’re splitting wood. Light, even pressure is all you need, so you don’t wear the stone unevenly. Now, start with the edge facing the stone, pulling the knife toward you in a smooth arc, like you’re slicing a thin layer off the stone. Then, flip the knife, do the same on the other side. That’s one full cycle.
How many cycles on the coarse side? Count the burr. A burr is that tiny metal lip that forms along the edge after you’ve ground both sides evenly. You’ll feel it if you run your finger along the edge gently, tip to heel, away from you. If it’s not there, keep going—usually 8 to 12 cycles per side, 16 to 24 total. If you have a big nick, add 4 to 6 extra. Once the burr is gone, you’re done with the coarse side. If you skip this, or stop too early, the nick will stay, and when you go to the fine side, it’ll still be there a week later. I once sharpened a customer’s favorite paring knife that had a huge chip, and he told me he’d spent months sanding it with a single fine stone—no wonder it never got sharp. He followed the coarse side step I showed him, and he texted me a week later saying it cuts apples so clean he doesn’t even peel them.
Now the fine side. This is where you hone that burr off and get the edge to razor sharp. No pressure here at all—almost zero. You’re just gliding the knife over the stone to remove that tiny metal burr, and polish the edge. Same angle as the coarse side, 15 to 20 degrees for the chef’s knife. Cycles? 5 to 8 per side, total 10 to 16. If you’re using a very fine double-sided stone (like our 8000 grit side), you can even do 3 or 4 per side, just enough to get the burr off. The key here is that the fine side should never be used to fix nicks. That’s why the two sides are different—one for grinding, one for honing. I see people do this all the time, trying to fix a chip on the fine side, and they end up grinding the edge too thin, which makes it bend or chip later.
After you’re done, what’s next? Flatten the stone. This is a step most people ignore, and it’s why their stones get worn out unevenly. A rounded stone gives you a rounded edge on your knife, which is weak. Every 10 sharpening sessions, or if you notice the middle of your stone is lower than the edges, use a stone flattening tool or a piece of 200 grit sandpaper on a flat surface to flatten it. For combination double-sided stones, you can also flatten each side separately, obviously. And after every use, rinse the water stone with warm water, dry it with a towel, and store it in a cool, dry place. Don’t leave it soaking in water overnight, and don’t let it sit on a wet counter—moisture will make the abrasive material break down faster.
Wait, let’s answer some common questions I get from customers, because that’s what makes this practical. First, can I use a double-sided stone for tools, not just knives? Absolutely—axes, machetes, chisels, all work. For axes, the angle is a bit steeper, 25 to 30 degrees, so that’s a good use for a double-sided stone: coarse side to fix a nicked axe edge, fine side to make it sharp enough to split kindling. Second, how often do I need to sharpen? That depends on use—if you’re a home cook sharpening a chef’s knife once a month, that’s fine. If you’re a line cook, once a week. Third, what if my stone is oil instead of water? Same process, just use honing oil instead of soaking, and wipe the stone down with a cloth after use to prevent oil buildup.
I’ve tested all kinds of double-sided stones over the years, and the mistakes I see are almost always the same: wrong angle, skipping the coarse side, not flattening the stone, too much pressure. A lot of people think expensive stones work better, but honestly, a basic aluminum oxide double-sided combo stone can work just as well as a $200 Shapton if you use it right. The problem isn’t the stone—it’s how you use it.
If you’ve tried sharpening with a double-sided stone and it didn’t work, or you’re looking to upgrade your set, I’m here to help. We carry a full line of double-sided sharpening stones for home cooks, professional chefs, woodworkers, and anyone who needs a sharp edge. Whether you’re picking out your first stone or restocking your shop, we can answer all your questions, help you pick the right grit for your needs, and walk you through any step of the process. Reach out to our team to discuss your requirements and find the perfect stone for you.
Abrasive Belt Cut to Length Machine References:
- Knife Sharpening: A Practical Guide, Culinary Institute of America, 2019.
- Sharpening Stone Care and Maintenance, International Knife Collectors Association, 2021.
- Abrasive Materials for Sharpening Tools, Woodworkers Guild of America, 2020.
iSharp Abrasives Tools Science Institute
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