Knife care from Japan, built for the years after purchase.
Japan Blade Sharpening is the overseas-facing information and service site operated in Japan by 切れ味長持ち研究所株式会社. The goal is to connect choosing a knife, using it well and maintaining it over time.
Condition before assumptions.
A knife's maker, steel and reputation matter, but service decisions must start with the actual knife in front of us: geometry, wear, damage, previous sharpening and how the owner uses it.
Choose with context
We explain knives and cutting boards around real use rather than treating specifications as isolated rankings.
Maintain for the long term
Sharpening and repair are part of ownership, not an unrelated service added after the sale.
Confirm before we promise
Shipping, price, turnaround and repair scope are confirmed from the actual request before you ship a knife or approve work.
Tell us what you own — or what you want to buy.
Purchase guidance and sharpening requests use the same starting point: your actual need.
