How to hold a samurai katana sword correctly?
1. Lightly align the palm root depression with the tiger's mouth above the handle ridge.
2. Grasp it gently with the radian of handle. Do not hold tightly. The front hand does not touch fuchi, and back hand does not touch kashira, and distance between two hands is 1 to 2 fingers wide, avoid rusting or wearing of metal fittings.
3. Check to see if the blade is naturally in line with arm. If your first three fingers exert too much force, the wrist will be bent by muscles traction and sword blade can not be in line with your arm.