Flattening Stone
Flattening Stone
Silicon Carbide
Works with Water Stones
Coarse Grit for Quick Flattening
Generous Size
Self-Cleaning Surface
Easy Maintenance
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Honing stones are an essential part of tool maintenance. Our chisels and plane blades gradually dull through use. But the very act of sharpening those can damage the honing stones we use, creating gouges in the surface that make the surface of the stone uneven. The more uneven they become, the less effective they are.
Our silicon carbide flattening stone (180 × 58 × 25 mm) provides a quick and easy way to maintain your honing stones, flattening the surface. While doing that, the stone also removes metal filings, which could be clogging up the pores in your honing stone, reducing its effectiveness.
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Universal Compatibility
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Fast, Even Flattening
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Clog-Free Grooves

Highlights:
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Fast, Fuss-free Flattening
Levels out any honing stone quickly so it’s ready for precise sharpening
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Built to Last
Silicon carbide construction is durable, fast-cutting, and long-wearing
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Self-Cleaning Surface
Slotted pattern sheds swarf to prevent clogging while you work.
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Coarse Grit for Quick Results
Saves time compared to finer-grit flatteners
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Generous Size
180 × 58 × 25 mm for stable, easy handling
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Easy Upkeep
Starts out flat, but can be resurfaced when needed to keep it in top condition.
How To Use The Flattening Stone
Uses & Features
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Grooved Surface
Deep slots clear away swarf and debris for a cleaner, more effective stone
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Fast Flattening
Coarse silicon carbide grit levels worn stones quickly and evenly
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Honing on Top
Smooth, stable base keeps your flattening work safe and steady.
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Honing on the Bottom
Perfectly flat stones mean sharper, cleaner edges on your tools.
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Works with All Whetstones
Flattens and refreshes any water stone, oil stone, or ceramic stone in your shop.
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Easy to Clean
Rinse with water and scrub with a nylon brush — ready for the next job in seconds
Frequently Asked Questions
What does the flattening stone do?
The flattening stone restores a flat surface to your honing stones, ensuring even contact and consistent sharpening results.
What is this flattening stone made from?
It’s made from silicon carbide, a durable abrasive that quickly removes material for fast and effective flattening.
What size is the flattening stone?
The flattening stone measures 180 × 58 × 25 mm, providing a stable surface that’s easy to control while flattening.
Why does the stone have a slotted pattern?
The slotted, self-cleaning surface allows metal filings and debris (swarf) to escape, preventing clogging and keeping the stone cutting efficiently.
Which stones can I flatten with this?
It’s ideal for flattening water stones such as the Sharpmate 400/1000 and 3000/6000 stones, as well as other similarly sized honing stones.
How do I maintain the flattening stone?
Rinse it after use to remove debris. If resurfacing is needed, use emery cloth on a very flat surface to restore optimal performance.
Came faster than expected and works better than I hoped. My sharpening stones feel brand new after using this flattening stone.
Keeps my waterstones perfectly flat. Saves me a lot of time, and the stone feels solid and well‑constructed.
REALLY GOOD BUY! Flattens stones evenly without much effort. The grooves help clear debris easily. Highly recommend for both beginners and experienced woodworkers.
Lightweight and easy to use. No complaints here
Easy to use and really effective. My chisels and plane blades are sharper than ever since flattening the stones with this tool.
I’ve tried a few flattening stones, but this one stands out. It’s fast, efficient, and leaves a perfect flat surface every time. Would buy again.
Arrived fast and does exactly what it promises. Makes flattening stones effortless and saves so much time.
Sturdy and well‑made. The surface stays even, and it’s easy to clean. I’ve used it several times and it hasn’t worn down at all.
This flattening stone is exactly what I needed. It quickly leveled my waterstones and plane stones without any hassle. Very satisfied!

