Sharpen like a pro — anytime, anywhere.
The James Barry ECCCM Diamond Credit Card Sharpening Stone is the ultimate compact sharpening solution for woodturners, carvers, and bushcraft enthusiasts. Designed with a unique 1.6mm rigid construction, it eliminates the flex seen in flimsier alternatives. This is not just a pocket-sized sharpener—it’s a portable powerhouse.

Featuring dual electroplated diamond grits—180 and 300—it’s ideal for restoring and maintaining razor-sharp edges on roughing gouges, scrapers, HSS hollowing tools, carbide inserts, and more. Whether you’re shaping a tough burr or touching up an edge in the field, this stone delivers fast, consistent results.

Unlike bonded or layered stones, both sharpening surfaces are electroplated directly onto precision-ground steel, ensuring true flatness and superior durability. The construction mirrors that of an iceberg—⅓ of each diamond particle is exposed for cutting, while ⅔ is embedded in nickel for long-lasting performance.

Paired with the James Barry Original Lapping Fluid (sold separately), this stone comes with a 5-Year Guarantee. The fluid not only lubricates but improves cutting performance and prevents clogging or rust.

Trusted by professionals for over 20 years, this is the sharpening tool you’ll always reach for—at the bench, in the shed, or out in the field.

What's Included:

• 1 x Double-Sided Diamond Credit Card Stone (180 & 300 Grit)

• 1 x Red Protective Storage Wallet

Specifications:

• Product Code: ECCCM

• Grits: 180 (70 micron) & 300 (50 micron)

• Material: Steel substrate, nickel-bonded diamond coating

• Dimensions: 85mm x 50mm x 1.6mm (3" x 2")

• Guarantee: 5 Years with James Barry Lapping Fluid