Gritomatic

Jasper Whetstone for Edge Pro

For Hapstone and Edge Pro knife sharpeners (Edge Pro format)

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Abrasive	Jasper natural whetstone
Composition	Single stone
Country of origin	Russia
Extra material	Mounted on aluminum blank
Format	Edge Pro
Thickness of abrasive	6 mm
Total thickness	9 mm
Working surface	152 x 25 mm (6" x 1")

Category: $25 to $50, 6 Mm, Edge Pro Stones, Gritomatic, Natural, Oilstone, Edge Pro Stones, Ultra Fine

Features

Jasper sharpening stones are used for finish sharpening and honing knives on Hapstone and Edge Pro sharpeners. Jasper is a naturally abrasive material of high density. Jasper stones are mounted on high quality aluminum blanks.

Jasper is mined in the Ural mountains in Russia. Jasper is a dense, opaque variery of cryptocrystalline chalcedony, contains significant proportion of Fe-oxides and hydroxides. Jasper does not consist of individual abrasive grains of the same size. A Jasper microquartz structure consists of a fused crystal grains of different sizes.

Specification

Product size: 160 x 25 x 9 mm (6" x 1" x ⅓")
Working surface: 152 x 25 x 6 mm (6" x 1" x ¼")
Weight: 100 g (3.5 oz)
Abrasive: Сryptocrystalline Quartz
Extra materials: Aluminum Blank, 3M PSA

How to use

Jasper stones should be used with one of these lubricants:

Refined olive oil
Oleic aсid

Jasper stones do not have any minor defects.

Jasper stone does not require any preparations. It is naturally lapped to ultra-fine grit. This is a big advantage because the difficulty of lapping Jasper is very high.

Q & A

What grit do Jasper natural stones have?

Grit terminology is not applicable to natural sharpening stones, including Jasper. The behavior of a natural stone depends on its density and how good it was lapped. However, experts estimate Jasper as 8000 - 10000 JIS.

About Gritomatic

Gritomatic is not just an online shop. This private brand is a collection of high-quality, custom-made sharpening products. Gritomatic offers natural and synthetic stones, empty blanks and leather.