This Japanese square hammer is forged by Shinzan , a craftsman from Sanjō renowned for his traditional, entirely handcrafted work. The head features a Tsuichime finish (hammered surface), which is not decorative but rather a testament to the successive hammering during the forging process, ensuring strength, density, and balance.
With a traditional weight of 50 monme (≈177 g) and a head length of approximately 65 mm , this compact gennō is ideal for precision work, delicate assembly, woodworking adjustments, or as a small test hammer. Each piece is unique, with slight variations and forging marks that reflect the blacksmith's craftsmanship.
This model is sold without a handle , allowing the carpenter or craftsman to choose their own handle according to their preference.
• Craftsman / Brand:Shinzan (深山) • Region :Sanjō – Niigata, Japan • Kind :Japanese square hammer (Shikaku Gennō) • Finishing :Tsuichime (hammered surface) • Head length:~65 mm • Weight :50 monme (≈177 g) • Sleeve :Not supplied (head only) • State :New – handcrafted (slight variations possible)
FinishingTsuichimetraditional hammering visible
Handcrafted forgeSanjō, historical center of Japanese tools
Lightweight hammer ideal for precise adjustments and fine work
Square shape offering excellent control of the strike
