Nagura Stone, 7/8 x 7/8 x 3 by Imanishi

Q: Can I use this Nagura to flatten my 1000 and 6000 grit stones?

A nagura stone will not be very useful to flatten your whetstone. For that, use either a purpose-built ‘flattening stone’ or a relatively coarse (like 400 grit) diamond stone. I use the latter; the best I’ve found for this is the ‘Atoma’ brand diamond plate, which is heavy and reliably flat, with the abrasive layer bound to a heavy metal backing.

Q: What grit is this Nagura stone?

It is about 400 judging by the size of the particles under an electronic microscope and comparing those to known grits. The grit of a nagura stone does matter because it adds its own abrasive particles to the waterstone slurry and if nagura and waterstone grits don't match it will affect the quality of the edge, especially for higher grit stones. It is a friction process and this nagura is soft, with a chalk base, and releases its abrasive easily, which adds to the effect of creating a non-uniform slurry. It is best to match the grit of your nagura to the grit of your stones (e.g., 1000 for 1000, 4000 for 4000, 8000 for 8000, etc.).

Q: I have a set of Japanese whetstones - 400/1000/3000 grit. Can I use this Nagura 8000 grit on them, or do I need an 8000 grit stone for it?

Use the Nagura Stone on the 3000 grit stone to build a slurry for faster cutting - Does not do as well on the 1000 grit stone, and not much at all on the 400 grit - Use the Nagura Stone, 1000 grit stone, 3000 grit stone, and a 8000 grit stone along with a honing angle guide for a shave ready edge.

Q: Can I use this to clean my Shapton whetstones 1000 and 5000 grit? What is suggested for cleaning lower grit stones?

It is my understanding that this particular Nagura stone is for 8000 grit sharpening stones. Although I have used it for lesser grit stones, that is not what it is recommend for.

Product ID: 52566638

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Details

Material
Stone
Brand
Iman
Color
light-colored
Product Dimensions
0.88"L x x 3"H
Grit Type
Ultra Fine
Number of Items
1

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Description

Man-made stone used to prepare polishing stones for use
Save sharpening time and encourage even wear on stones
Approx. size 7/8" x 7/8" x 3"

Nagura Stone, 7/8 x 7/8 x 3 by Imanishi

Specifications

Material	Stone
Brand	Iman
Color	light-colored
Product Dimensions	0.88"L x 0.88"W x 3"H
Grit Type	Ultra Fine
Number of Items	1
Manufacturer	Iman
UPC	714833920014
Part Number	50/NG
Item Weight	2.39 ounces
Item model number	50/NG
Is Discontinued By Manufacturer	No
Item Package Quantity	1
Batteries Included?	No
Batteries Required?	No

Have a Question? See What Others Asked

Can I use this Nagura to flatten my 1000 and 6000 grit stones?

What grit is this Nagura stone?

I have a set of Japanese whetstones - 400/1000/3000 grit. Can I use this Nagura 8000 grit on them, or do I need an 8000 grit stone for it?

Can I use this to clean my Shapton whetstones 1000 and 5000 grit? What is suggested for cleaning lower grit stones?

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