The Naniwa Professional 400 grit stone is hardcore. It eats up steel so fast that it makes serious repairs & bevel-setting a dream. Naniwa Professional stones are harder than most, so they stay flat better and last much longer than cheaper options.
When to use this stone:
Cuts steel quickly and no soaking is required, just splash and go.
Sets a good flat foundation for any knife thinning you are doing and takes out deep stratches very quickly, priming your knife for finer stones.
Works great for touch-ups on rugged outdoor knives.
Due to its hardness, it is by far the longest-lasting low grit stone available and will need much less truing than other low grit stones.
That said, always flatten your stone with a truing stoneafter sharpening.
Stone Usage Prep
Splash and go
About Naniwa -Naniwa is the biggest and best sharpening stone manufacturer in Japan. Their stones are among some of the highest quality in the world, good for both professional and amateur. They make a wide range of grits and densities, so you can choose the perfect stone for your needs and budget.
Sharpening knives can be one of the most satisfying and fun skills to learn and do. Whether you’re an old hand at sharpening, or just starting out, we want to give you a few tips to help you get the most out of your water stones. If you have any questions about care or technique, please feel free to get in touch, our contact information is below.
Use plenty of water. Periodically splash your stones with water as you use them to prevent the stone from plugging up with residue.
Some stones require soaking in water for about 20 minutes prior to use, others only require a splash of water while sharpening. Knifewear brand stones tell you what they require on the package. A good way to tell which a stone requires is to splash it with water, if the stone immediately sucks up all the water on it, soak it. If it
pools on top don’t soak it.
Stones take on steel residue with use. A small Nagura stone can help clean the surface like an eraser.
Use a truing stone to keep the stone surface flat. Softer stones might require this before every sharpening session. This will help you to maintain the correct angle for sharpening, which is critical for creating the best knife edge.
We suggest lightly beveling the edges of the stone with a truing stone to avoid cutting yourself, and to prevent chips from coming off.
In dry climates, certain stones can be vulnerable to cracking if they dry too quickly. To avoid this, wrap these stones in a damp tea towel and allow to dry more slowly. These include the Knifewear 4000 and 8000, as well as the Naniwa Professional series.
Do not keep stones in direct sunlight, extreme heat or cold
(e.g. Inside a car in winter) and avoid dropping them.
Always wipe excess water off from the stone before storing.
Never ever use oil on a water stone. It will ruin it.
We aim to ship your order within 1 business day at Knifewear, if there is a hold up, we'll aim to let you know and give you a timeline.
We offer free shippingon orders over $100* anywhere in Canada and $200* to customers in the USA. We ship worldwide, and offer up to the minute rates from our shipping partner DHL.
*Konro Grills and some other larger items are excluded from the free shipping offer.
Can I pick up my order Curbside / At the store? Absolutely, as long as all the items you are looking for are in stock at the location you want to pickup from, you'll be able to select that at the checkout. If one or more items aren't at your preferred location we are happy to ship it to you.