MadEdge

Grinding Stones

Professional sharpening stones for precision edge restoration. Choose between diamond-embedded bars for extreme durability or aluminum oxide stones for traditional sharpening excellence.

MadEdge Diamond Stones Set
Ultra-durable diamond coating
Suitable for carbide and hardened steel
Ideal for industrial and precision use
PREMIUM

Diamond Stones

Set of four precision-engineered diamond stones with monolayer metal bond. Diamonds evenly distributed throughout the volume ensure consistent sharpening performance and exceptional longevity.

Technical Specifications

Type:Monolayer metal bond with diamonds
Size:150 × 25 × 3 mm
Material:Copper-tin bond
Diamond Concentration:100%
Tolerance:±0.1 mm

$84.99

Set of 4 stones


MadEdge Aluminum Oxide Sharpening Stones
Four grit levels: 200 / 400 / 800 / 1500
Water-based sharpening (soak before use)
Ideal for kitchen knives and woodworking tools
TRADITIONAL

Aluminum Oxide Sharpening Stones

Premium aluminum oxide stones designed for versatile sharpening applications. Four different grit levels provide everything from initial shaping to fine polishing.

Technical Specifications

Size:160mm × 25mm × 6mm
Material:Aluminum oxide
Grit Options:200 / 400 / 800 / 1500
Shape:Rectangular bar

$36.99

Set of 4 stones included

Stone Comparison

FeatureDiamond StonesAluminum Oxide
MaterialDiamond + Copper-tin bondAluminum oxide
Size (mm)150 × 25 × 3160 × 25 × 6
Grit RangeVarious (4 stones)200 / 400 / 800 / 1500
DurabilityExtremeHigh
Best ForIndustrial, carbideGeneral purpose
Price$84.99$36.99

How to Use Sharpening Stones

1

Prepare the Stone

For aluminum oxide stones, soak in water for 10 minutes. Diamond stones can be used dry or with light oil.

2

Set the Angle

Maintain consistent angle: 15-20° for knives, 25-30° for tools.

3

Start with Coarse Grit

Begin with 200-400 grit to establish the edge.

4

Progress Through Grits

Move to finer grits: 400 → 800 → 1500 for polished edge.

5

Use Smooth Strokes

Apply even pressure along the entire blade length.

6

Clean & Store

Rinse aluminum oxide stones, wipe diamond stones clean.

Stone Care & Maintenance

Diamond Stones

  • Can be used dry or with light oil
  • Clean with soft brush and water
  • Do not require flattening
  • Store in protective case when not in use

Aluminum Oxide Stones

  • Soak in water before use (10 minutes)
  • Clean with water only, no soap
  • Flatten surface periodically with flattening stone
  • Dry completely before storing
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MadEdge - Professional Sharpening