Bouzumen-Ganna Japanese Hand Made Chamfer Plane Blade By Natsumiyahisa - 7.5mm
Brand name: Kunihide
Smith name: Natsumiyahisa (夏宮久)
Steel: Blue Steel
Jigane(Iron part of the blade): Modern soft iron
Blade width: 20mm
Chamfer width: 7.5mm
Blade total length: 95mm
Blade thickness: The blade near the bevel(about 2.60mm)，Top of Blade（about 5.00mm）
Weight: 49g
Blade Angles: about 24°
Accessories：-
Additional Information: Used. I purchased it from a tool collector.
According to information I recently gathered from the web and Mr. Tsuchida, these blades were forged by the late Hisashi Natsumiya, a renowned blacksmith from Kiryu, Gunma Prefecture, who specialized in Mini planes (Mame-ganna).
He did not operate under his own brand; instead, he primarily produced blades for the 'Kunihide' and 'Yoshihiro' brands. It is said that his techniques also had a significant influence on the Metsugi blacksmiths.
Below is an article I recently found in Knife magazine introducing this blacksmith. Click here to download.
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