Nubatama Bamboo Series Logo

Nubatama Bamboo #320 (Platinum)

$103.04
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Nubatama Bamboo Series Logo

Nubatama Bamboo #320 (Platinum)

$103.04
6 in stock
Why You Need This Stone: The Bamboo #320 Platinum utilizes a premium high-density abrasive formulation designed for wear-resistant steels and high-alloy cutlery. Operating as a zero-soak stone, it cuts rapidly across hard alloys without glazing or loading.

Buy This Stone If:

  • You sharpen advanced powdered steels (SG2/R2, ZDP-189) or tough tool steels.
  • You want a fast, high-density coarse refinement stone.
  • You seek elevated synthetic waterstones from the Ken Schwartz Estate.

Specifications

  • Brand: Nubatama
  • Grit: #320 (Coarse)
  • Series: Bamboo (Platinum)
  • Type: Splash & Go / Hard Bond
  • Dimensions / Profile: 210 x 75 x 30mm Flat
  • Binder Hardness: Extra Hard
  • Provenance: Ken Schwartz Estate

Notes & Usage

  • Common Tasks:
    • Coarse refinement on hard alloy and powdered metal blades.
    • Resetting primary bevels on wear-resistant knives.
    • Cleaning up deep scratch patterns prior to 1k sharpening.
  • Cutting Action & Speed: High abrasive concentration delivers rapid stock removal without surface loading.
  • Surface Feedback: Ultra-firm feedback with high resistance against dishing.
  • Steel Compatibility: Optimized for high-vanadium powdered steels, tool steels, and hard carbon cutlery.

Progression Ideas

  • Preceding Step (Lower Grit): Nubatama Bamboo #150 or #220
  • Following Step (Higher Grit): Nubatama Bamboo #1000 or Platinum #1000

Also Consider

  • For Standard Carbon Cutlery: Consider the standard Nubatama Bamboo #320.
  • Essential Maintenance: Pair with a diamond flattening plate or dressing stone to keep the working face true and active.

Condition

New in original factory packaging.

Note: Photos represent our stock inventory for this stone; individual box wear or color tone may vary slightly from the unit pictured. Reference objects (rulers, coins) are for scale only and are not included.

Shipping

Orders are typically processed and shipped same day from Santa Maria, CA.

Every stone ships in a new, high-quality box, individually wrapped in bubble wrap and packing paper for maximum protection in transit.

Please reach out with any questions before or after purchase — happy to help.

Return policy

At Pacific Waterstone, we stand behind the authenticity and quality of every stone we sell.

Incorrect or Mislabeled Items
If you receive an item that is mislabeled, damaged, or significantly mischaracterized in its listing, we will make it right. You may return the item for a full refund or exchange with no restocking fees, and we will cover all return shipping costs.

Standard Returns
If you change your mind or wish to return an item for any other reason:

  • Returns are accepted within 14 days of delivery.
  • Items must be returned in their original, unused condition with all original packaging.
  • A 10% restocking fee applies to cover processing costs.
  • Return shipping costs are the responsibility of the customer.

To initiate a return, please contact us with your order number and the reason for your request.

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