Thinned pieces of Uchigumori for finish work. It is used to bring out Hamon.
Grind it thin and make the surface smooth. Then, polish the Ha neatly.
After this work, Hamon appears whitish.
Hazuya is usually lacquered with Yoshino-gami (
https://www.namikawa-ltd.com/product/110 ) to make it strong and not to crumble during polishing.
Please ask for shipping cost from the following link.
https://www.namikawa-ltd.com/contact
-- Recommended Book and DVD --
The Art of Japanese Sword Polishing
https://www.namikawa-ltd.com/product/99
Hon'ami Koshu - Sword Polishing - (DVD)
http://www.namikawa-ltd.com/product/771