Proper Grip and Hand Position
There are few things more satisfying than making a clean cut with a traditional Japanese katana, but much goes into learning how to do it properly.
In order to make a clean cut, the grip on the katana must be correct and in line with the “ha” the leading edge of the blade.
The hands must be placed in the proper position with approximately the width of a hand between them. There are adornments wrapped into the handle called “menuki’s”. These can help with your hand placement, usually one in each hand.
There are two angles that are particularly important: The angle of the blade must match the angle of the arc of the swing. (see illustration)
Poor alignment of the blade to the arc will result in more friction and affect the penetration of the blade, especially in thicker objects.