ALTSTONE | FUKAMI #300 Coarse Ceramic Sharpening Whetstone, Made in Japan, w/ EN Manual

FUKAMI — Pro Power. Perfectly Compact for Home Use

・Coarse to medium sharpening — smooth, efficient, and compact. Designed for serious results at home.

Ceramic whetstone for coarse (#300)
The ALTSTONE FUKAMI #300 coarse grit whetstone. This Japanese-made ceramic sharpening stone offers efficient, splash-and-go sharpening performance for kitchen knives. Ideal for repair and daily edge maintenance in a compact, easy-to-use format. (Stone only.) included.)

■ 特長
・High Grinding Power: WA abrasives deliver consistent sharpening performance with dense ceramic construction.
・Versatile Application: Effective for both stainless and high-hardness steel kitchen knives.
・Thorough Inspection: Each item is quality-checked by both manufacturer and seller before shipping.

■ 仕様
【粒度】#300 (Coarse)
【サイズ】180 × 60 × 20 mm
【重さ】430g (main)
【材質】Vitrified ceramic
【吸水性】Soaking (~10 min)

■ About ALTSTONE — Crafted for Sharpening Excellence in Japan
In Japan, sharpening blades has never been just the work of professionals. For generations, people have used whetstones at home to maintain their kitchen knives — a tradition deeply woven into daily life.

This culture shaped the development of Japanese whetstones. Brands like Shapton, King, Naniwa, and Suehiro have each refined bonding methods, abrasive quality, and sharpening feel to meet different needs.

Japanese sharpening stones now set a high global standard for material quality, structure, and craftsmanship.

ALTSTONE honors this legacy with the FUKAMI series—designed for a wide range of blades from stainless steel to carbon steel, including curved and utility edges.

By controlling hardness and surface texture, we ensure a smooth, responsive sharpening experience. Whether you're just starting or already skilled, ALTSTONE stones help you achieve edges that cut cleaner and cook better.

■ 使い方
・Watch our sharpening tutorial on YouTube:
https://www.youtube.com/watch?v=v7rpC0RKRgI&t=12s