RISAM – synthetic sharpening stones
RISAM – synthetic sharpening stones
RISAM synthetic sharpening stones for basic sharpening, edge repair, fine honing and final polishing of knives. The range includes combination water stones, individual JVT stones, sharpening sets and practical accessories for stable angle control and stone flattening.
RISAM sharpening stones – accessible and practical knife sharpening
RISAM – synthetic sharpening stones are a practical choice for users who want to maintain kitchen, butcher, European and Japanese knives regularly and predictably. The range includes grits for repairs, basic sharpening, honing and final polishing.
Selected RISAM combination and JVT stones use synthetic abrasive based on corundum, aluminium oxide. This supports efficient sharpening, predictable material removal and good control over the edge.
The full sharpening range is available in Sharpening stones. Other brands can be compared in Synthetic sharpening stones.
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RISAM offers coarser stones for repairs, universal grits for basic sharpening and fine stones for honing and final polishing. |
A two-grit stone lets you start sharpening and continue with finer honing using one tool. |
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RISAM offers sets with stones, angle guide, holder, flattening block and stropping leather. |
The angle guide helps keep the angle, the holder stabilizes the stone and the flattening block keeps the working surface flat. |
Wide grit selectionHow to navigate RISAM stones?
The RISAM range is divided into combination stones, individual JVT stones, sharpening sets and practical accessories. Combination stones are ideal for two-step sharpening; sets are useful when you want stones and accessories in one package.
| RISAM product type | When to choose it | Example use |
|---|---|---|
| Combination stones | When you want two grits in one stone and a simple sharpening progression. | #400/#1000, #600/#2000, #2000/#5000, #3000/#8000 |
| Individual JVT stones | When you want a precisely selected grit and your own sharpening progression. | #400, #800, #2000, #3000 |
| Sharpening sets | When you want stones, accessories and a clear workflow in one package. | Beginner, Advanced, Pro, #800/#2000/#5000 set |
| RISAM accessories | When you want more stable sharpening, better angle holding and flatter stones. | Angle guide, adjustable holder, ceramic flattening block |
Choosing RISAM grit by edge condition
Grit determines how fast a stone removes material and how fine an edge it leaves. RISAM offers practical combinations for repairs, basic sharpening, honing and polishing.
| Grit | Use | Suitable RISAM products |
|---|---|---|
| #240–#400 | Repairing damaged or very dull edges, faster material removal, restoring the basic bevel shape | #240/#800, #400/#1000, JVT #400 |
| #600–#1000 | Basic sharpening of a normally dull knife, creating a working cutting bevel | #400/#1000, #600/#2000, JVT #800 |
| #1500–#3000 | Honing, smoothing marks after the basic stone, cleaner kitchen cut | #400/#1500, JVT #2000, JVT #3000, #2000/#5000 |
| #5000–#8000 | Fine final honing, edge polishing, cleaner cut on higher-quality and thinner blades | #2000/#5000, #3000/#8000, #800/#2000/#5000 set |
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Simple RISAM rule For a first practical stone, choose #400/#1000 or #600/#2000. For finer kitchen and Japanese knives, add #2000/#5000. For a complete solution, choose BEGINNER, ADVANCED or PRO set. |
Selected RISAM sharpening stones, sets and accessories
In this category you will find individual stones and complete sets covering basic sharpening, repairs, honing, polishing and accessories for more stable work.
| Product | Suitable use | Price | Link |
|---|---|---|---|
| Vodítko na broušení nožů RISAM | Angle guide for keeping an approximately 15° angle when sharpening on water stones or diamond sharpeners. | 159 Kč | Show |
| Kombinovaný brusný kámen RISAM JIS #2000/#5000 | Finer combination stone for honing, bevel smoothing and final polishing. | 859 Kč | Show |
| Srovnávací blok brusných kamenů keramický RISAM | Ceramic JIS #180 block for regular flattening of water sharpening stones and removing hollows. | 599 Kč | Show |
| Sada brusných kamenů ZAČÁTEČNÍK | Set with #400/#1000 and #2000/#5000 stones, angle guide, flattening block and holder for starting hand sharpening. | 2 599 Kč | Show |
| Sada brusných kamenů POKROČILÝ | Set with #800, #1500 and #3000 stones for basic edge work, honing and advanced bevel control. | 2 899 Kč | Show |
| Sada brusných kamenů PROFÍK | Set with #240/#1000 and #2000/#5000 stones, flattening block, holder and stropping leather. | 2 899 Kč | Show |
| Kombinovaný brusný kámen RISAM JIS #400/#1000 | Practical stone for repairing a less maintained edge and subsequent basic sharpening. | 559 Kč | Show |
| Kombinovaný brusný kámen JIS #240/#800 RISAM | Coarser combination for damaged, very dull or long-neglected edges. | 599 Kč | Show |
| Kombinovaný brusný kámen JIS #3000/#8000 RISAM | Fine combination stone for final honing, edge smoothing and polishing quality blades. | 1 099 Kč | Show |
| Set brusných kamenů #800, #2000, #5000 s vodítkem RISAM | Three stones and guide for accurate sharpening from basic edge work through honing to finer finishing. | 1 599 Kč | Show |
RISAM for beginners, advanced users and pros
Beginners usually appreciate an angle guide, holder and flattening block. Advanced users can choose exact grits according to the knife condition. Pros and enthusiasts can use multiple sharpening steps and stropping leather.
| User level | Recommendation |
|---|---|
| Beginner | BEGINNER set or #400/#1000 stone + guide + holder. Learn angle, pressure and burr formation. |
| Advanced | ADVANCED set, #800/#2000/#5000 set or #400/#1500 and #2000/#5000 combinations according to knife type. |
| Pro / enthusiast | PRO set, coarser repair stone, fine finishing stone and stropping leather for final tuning. |
How to use RISAM sharpening stones correctly?
Before sharpening, check whether the stone needs soaking or only moistening. Place it securely in a holder or on a non-slip mat. Keep a stable angle; for most European kitchen knives this is approximately 15–20° per side. With Japanese knives, respect the original edge geometry.
Start with the grit according to knife condition. Use the coarser side for damaged or very dull edges. For regular maintenance, medium grit is enough. Continue with a finer stone to smooth the bevel and improve cutting performance.
Why use a flattening block and holder?
Water synthetic stones gradually hollow during use. An uneven stone worsens angle control and may create an uneven bevel. Regular flattening restores the working surface and improves sharpening accuracy.
A stone holder improves stability and reduces slipping. An angle guide helps beginners keep the sharpening angle. These aids are not mandatory, but they make first steps easier and results more repeatable.
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Warning Coarser RISAM stones such as #240, #400 or #400/#1000 remove material quickly. Use them mainly for repairs, very dull knives or bevel restoration. With quality Japanese knives, use light pressure, stable angle and finer grit progression. |
Care for RISAM sharpening stones
After sharpening, rinse the stone from slurry and metal particles. Let it dry well and do not store it permanently in water unless the manufacturer recommends it. Check flatness and flatten the stone if hollows appear.
A clean, flat and properly maintained stone sharpens faster and more accurately. If the stone is clogged or hollowed, blade contact and angle control become worse.
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Need help choosing RISAM? We will gladly help you choose the right sharpening stone, set or accessory according to knife type, steel hardness and sharpening experience. Call customer support at +420 702 049 048, Mon–Fri, 7:30–16:00. |
Frequently asked questions about RISAM sharpening stones
| Question | Answer |
|---|---|
| Who are RISAM sharpening stones suitable for? | For beginners, home cooks and advanced users who want accessible synthetic stones, sets and accessories for hand sharpening knives. |
| Which RISAM stone should I choose first? | A practical first choice is a #400/#1000 or #600/#2000 combination stone. For a complete start, choose the BEGINNER set. |
| What is RISAM #2000/#5000 for? | It is used for honing, bevel smoothing and finer edge finishing after basic sharpening. It suits higher-quality kitchen and Japanese knives. |
| When should I use RISAM #240/#800 or #400/#1000? | Use these coarser combinations for very dull, damaged or long-neglected knives. They are not always necessary for normal fine honing. |
| Is the RISAM angle guide suitable for beginners? | Yes. The guide helps keep a stable angle of approximately 15° and is a practical aid when learning stone sharpening. |
| Why use a RISAM flattening block? | Water stones hollow with use. A flattening block restores the flat working surface and improves sharpening accuracy. |
Product sorting
List of products
RISAM RW009 Knife Sharpening Guide is a practical tool for manual sharpening on water stones or diamond sharpeners. It helps maintain a stable angle of approximately 15°, making...
Combination grinding stone Risam with very fast grinding and polishing effect. The stone is made of synthetic Corundum (aluminium oxide). The grinding stone is supplied with a...
RISAM RW011 Ceramic Leveling Block is a practical tool for regularly leveling water-grinding stones. Its JIS #180 grit helps quickly remove unevenness, indentations, and worn...
Large combination grinding stone RISAM with very fast grinding and polishing effect. The stone is made of synthetic Corundum (aluminium oxide). The grinding stone is supplied...
Combined large RISAM grinding stone with very fast grinding and polishing effect. The stone is made of synthetic Corundum (aluminium oxide). The grinding stone is supplied with...
Adjustable RISAM grinding stone holder, suitable for multiple stone sizes thanks to movable foot with stop. Use the guide screws to adjust the desired stone size. Non-slip...
RISAM ADVANCED sharpening stone set. Includes RISAM stones #800, #1500, #3000 made according to Japanese standards for basic edge repair, fine sharpening, and final polishing +...
RISAM precision grinding stone with the highest Japanese JVT standard. Strong abrasive force and very fast grinding and polishing effect. The stone is made of synthetic Corundum...
Combination grinding stone Risam with very fast grinding and polishing effect. The stone is made of synthetic Corundum (aluminium oxide). The grinding stone is supplied with a...
Combination grinding stone Risam with very fast grinding and polishing effect. The stone is made of synthetic Corundum (aluminium oxide). The grinding stone is supplied with a...
Combination grinding stone Risam with very fast grinding and polishing effect. The stone is made of synthetic Corundum (aluminium oxide). The grinding stone is supplied with a...
The complete kit for sharpening kitchen knives at home includes a RISAM #240/#1000 combination whetstone, an adjustable holder, a #180 diamond honing block, and a double-sided...
Sharpening Stone Set RISAM including guide to maintain the blade angle. Suitable for precise and fine sharpening. The set includes JIS #800, #2000 and #5000 grit stones + guide.
Combination grinding stone RISAM with very fast grinding and polishing effect. The stone is made of synthetic Corundum (aluminium oxide). The grinding stone is supplied with a...
Risam precision grinding stone with the highest Japanese JVT standard. Strong abrasive force and very fast grinding and polishing effect. The stone is made of synthetic Corundum...
Risam precision grinding stone with the highest Japanese JVT standard. Strong abrasive force and very fast grinding and polishing effect. The stone is made of synthetic Corundum...
Risam precision grinding stone with the highest Japanese JVT standard. Strong abrasive force and very fast grinding and polishing effect. The stone is made of synthetic Corundum...
High quality Risam combination water grinding stone with very fast grinding and polishing effect. The stone is made of synthetic Corundum (aluminium oxide). The grinding stone...
Combination grinding stone Risam with very fast grinding and polishing effect. The stone is made of synthetic Corundum (aluminium oxide). The grinding stone is supplied with a...
RISAM combined grinding stone with very fast grinding and polishing effect. The stone is made of synthetic Corundum (aluminium oxide). The grinding stone is supplied with a...