Yamakichi Genno Japanese Hand Made Hammer by Hiroki - 80 Monme ②

Additional Information: Brand new and unused, this hammer is in pristine condition. It was meticulously handcrafted about 5 years ago by the master blacksmith Hiroki Aida, showcasing exceptional craftsmanship. The length-to-width ratio of the hole in Yamakichi-style hammers is different from other high-profile hammers, usually falling just short of the ideal 3:1 ratio.

The reason I included the data on the eye's Vertical-to-horizontal ratio is as follows (particularly for large slender hammers):

In the article 「「Shape of Carpentry Tools - About the Genno，[Part 3] Holes and Handle」, p38, Knife Magazine No. 10, 2010.」 by Mr. Tsuchida Noboru, it is mentioned:

“To the extent that the strength of the handle tip can be maintained, it is best to make the eye as small as possible. An eye with a vertical-to-horizontal ratio of about 3:1 is, based on experience, considered an effective design. However, the more elongated, narrower, and smaller the eye is, the more advanced manufacturing techniques will be required. This is only natural, as a larger eye allows for a greater margin of error during the forging process.”