Description

Norton Jum3 SHARPENING STONE

The NORTON JUM3 SHARPENING STONE is made from CRYSTOLON it is a combination oil Stone. Recommended for use on harder metals like High Speed Steel; tends to cut more aggressively than the Foss or the Norton IM2 but at the same time will wear more quickly.

• Crystolon Combination Coarse and fine grit sharp-cutting silicon carbide abrasive surfaces for general sharpening (to moderate tolerances) when the speed of sharpening is more important than the fineness of the cutting edges. Gray in color.

11.5″x2.5″x1″

Coarse CRYSTOLON-100 grit–41 microns

Fine CRYSTOLON–240 grit–53 microns 25×7.5×2.5cm (10x3x1 inch)

In addition this stone should be used with OIL

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