Genno is what the Japanese call the hammer. Due to its unique characteristics, a dedicated page has been given to its origins rather than its function. Selective hardening at the striking surfaces allows part of the rebound energy to be absorbed by the slightly softer core of the steel. This creates a feeling of increased effectiveness when striking, as less rebound energy is transferred to the wrist.

The square and octagonal hammers have a flat striking surface on one side of the hammerhead and a slightly convex one on the other. Depending on the need, either side can be used. The flat side is used, for example, for striking chisels or for driving in workpieces very close to inner edges. The cheeks of the hammerhead glide over the workpiece surface, with the striking surface positioned at a right angle. This significantly increases the chance of being able to drive a small nail straight at an unfavorable spot. When driving nails with the nail head countersunk, using the convex side prevents damage to the surrounding wood surface.

Traditionally in Japan, iron hammers are also used for striking chisels – the 375 g hammer is suitable for this. Naturally, you need to aim a bit better than with a wooden mallet. If you don’t quite trust yourself with that – the Daruma – an impressive model of a sledgehammer, is broad enough in its striking surface.

Our wide selection of Japanese hammers offers both

• Genno – the standard hammer in Japanese carpentry
• Sakikiri – hammer with pointed peen
• Daruma – Japanese sledgehammer
• Japanese claw hammer with a steel pipe handle or wooden handle