ナニワ研磨工業 Naniwa NA-0040 New Arata Professional Rough Whetstone #400 8.3 x 2.8 x 0.6 inches (210 x 70 x 15 mm)

レビューが良かったので購入しました。大変良く研げ中砥石前に軽く当てるだけで中砥石研ぎが凄く楽になります。減りが早いのでもう少し厚いともっと良いかな。

Me encantó. Aunque soy aprendiz afilando cuchillos… y lo hago incorrectamente. Solo me gustaría que incluyeran algún video, aunque sea en inglés, para aprender a usar correctamente las piedras y sacar el mejor provecho de ellas. Saludos

Pedra de excelente qualidade.

Great stone. Amazon shipped it in an ENVELOPE WITH ANOTHER STONE, so it was damaged upon receipt. It absolutely blows my mind that a sharpening stone that weighs almost a Kg, or about 1 1/2 pounds is shipped with another one of a different grit in a freaking soft envelope. In the same week I get a small plastic chainsaw part about the size of a quarter that is in a plastic envelope, inside a small box, inside a shoebox sized box filled with inflatable packing balloons. Amazing, no it's Amazon.

I've heard a lot of people recommend 400 or 800, so I went for the middle. Already it cuts fast enough to fix a tiny chip from a white #2 knife and the edge it leaves is sharper than anything from factory. It raises slurry very well and isn't sloppy by any means. It also looks so delicious, such pretty deep blue.