Nubatama Bamboo #15,000 (Upper Grade)
The finest stone Nubatama made. Ken Schwartz listed it alongside the Shapton Glass 16k and the Suehiro Gokumyo range when people asked what to buy at this level.
| Feature | Specification |
|---|---|
| Brand | Nubatama |
| Type | Synthetic |
| Grit | #15,000 (Ultra Fine) |
| Series | Bamboo (Upper Grade) |
| Binder Hardness | Standard |
| Profile | 205 × 75 × 25mm Flat |
Buy This Stone If You're
- Finishing straight razors to a comfortable, refined shaving edge.
- Wanting a synthetic that Ken rated against natural finishing stones.
- Topping out a progression without moving to naturals or ultra-fine strops.
Water
Nubatama range stones should not be permasoaked. Let dry fully before storage.
Progression Ideas
- Preceding Step (Lower Grit): Nubatama Bamboo #8000 or #10,000.
- Following Step (Higher Grit): A natural finisher, or a sub-micron loaded strop.
Ken Schwartz Video
Notes
- Made in two formulations, regular and hard. This is the regular.
- Grouped with the 2000 and 3000 upper-grade Bamboos as Ken’s premium tier, sold in low volume.
Read More
- Next Stone — Naniwa Super 12K Or SP15K? – Where the 15k sits among the ultra-fine finishers worth considering at this level.
- 2K Nubatama Bamboo – Ken on the upper-grade Bamboo stones and why he rated them against naturals.
- Quick Overview Of Nubatama Stones – A tour of the whole line and how the grits were designed to fit together.
- Learn From My Mistakes… Stones Cracking – Permasoaking and drying guidance for the full Nubatama range, and why it matters.
Condition
- Stone: New and unused.
- Packaging: While our inventory is new, the original packaging may show minor shelf wear, scuffing, or external softening due to warehouse storage and handling over the last five years. Internal protective wrapping (plastic or paper) may show signs of handling, minor tears, or may occasionally be absent—this never affects the condition of the stone itself.
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.
Provenance
Everything we carry comes from the personal collection of Ken Schwartz — the sharpener behind Precise Sharpening, who built the Nubatama line and gathered the naturals that sat beside it on his bench. The synthetics are new and unused. The naturals were his.