I have seen carpenters using water with this stone. Can water be used? What grid are the two surfaces?

I am not sure about the grind of the surfaces but it contains two surfaces a coarse one and a smooth one. It is good to sharpen all kind of kitchen knives and cleaver. Few drops of water could be used for grinding but you need to ensure that if you knife's blade is made of high carbon steel instead of stainless steel like most kitchen knives then you need to wipe the blade dry and coat it with a drop of linseed oil to avoid rusting. Personally, I use less water and use a drop of linseed oil for some of my expensive blades.

Which side is the fine side , is it the dark side with the logo printed on it ?

Dear Amrinder Ji,The side which feels smoother than other on touch is FINE and the other is Coarse ( Rough ).

is the stone oil based or water based ? I ordered it but dint know what to use. Please advice.

I have used it for sharpening kitchen knife. I use it with both water and dry

What is the grit rating for the two sides?

its fine and coarse, approx 100 and 60.

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Cumi Carborundum CSSC109 Silicone Carbide Combination Stone, 150 X 50 X 25 Millimeter, Black

Product ID: 64564259

Details

Brand
Cumi
Colour
Black
Grit Type
Coarse
Item Weight
308 Grams
Material
Silicone
Net Quantity
1 Count

📏150x50x25 mm compact size

🔪Sharpens stainless & carbon steel

⚙️Dual grit for coarse & fine sharpening

¥1708

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Description

🔪 Sharpen your edge, sharpen your game!

DUAL GRIT VERSATILITY - Coarse and fine surfaces let you tackle blunt blades and perfect finishing with ease.
TRUSTED BRAND QUALITY - From Cumi, a leader in sharpening technology, backed by thousands of satisfied users.
PRECISION EDGE MASTERY - Achieve razor-sharp, long-lasting edges on all your premium knives and tools.
UNIVERSAL COMPATIBILITY - Effortlessly sharpens stainless steel, carbon steel, and a wide variety of cutting tools.
COMPACT DURABLE DESIGN - Portable 150x50x25 mm stone built to last, fitting seamlessly into your professional toolkit.

The Cumi Carborundum CSSC109 Silicone Carbide Combination Stone is a compact, dual-grit sharpening stone (150x50x25 mm) designed to deliver strong, keen, and long-lasting edges on stainless steel, carbon steel, and various knives and tools. Manufactured by Carborundum Universal Limited, this durable stone offers coarse and fine surfaces for versatile sharpening needs, making it a must-have for professionals and enthusiasts seeking precision and reliability.

Specifications

ASIN	B00S86FA6M
Best Sellers Rank	#13,248 in Home Improvement ( See Top 100 in Home Improvement ) #5 in Sharpening Stones
Brand	Cumi
Colour	Black
Country of Origin	India
Customer Reviews	4.2 4.2 out of 5 stars (2,198)
Enclosure Material	Silicone Carbide
Grit Type	Coarse
Included Components	1 Pcs Cumi Stone
Item Dimensions L x W x H	15L x 5W x 2.5H Centimeters
Item Type Name	Cumi
Item Weight	308 Grams
Manufacturer	CARBORUNDUM UNIVERSAL LIMITED, CARBORUNDUM UNIVERSAL LIMITED , #655, Thiruvottiyur high Road, Thiruvottiyur, Chennai-600019
Manufacturer Contact Information	CARBORUNDUM UNIVERSAL LIMITED , #655, Thiruvottiyur high Road, Thiruvottiyur, Chennai-600019
Manufacturer Part Number	CSSC109
Model number	CSSC109
Number of Items	1
Packer Contact Information	Eagle Network Supply Pvt. Ltd. , Khasra No. 399 Delhi - 110030
Unit Count	1 Count

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¥1708

Duties & taxes included

In stock

Sold byAmazon JapanDelivered byDesertcartCustomer service byDesertcartReturns14 days · 30 with PRO

Buyer Protection · Full refund if your order doesn't arrive as described.

Desertcart purchases this item on your behalf and handles shipping, customs, and support to Japan.

Secure transaction

Trustpilot

TrustScore 4.5 | 7,300+ reviews

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