Test cutting as an integral part of the overall education of the sword and sword technique. Japanese Military Toyama tameshigiri offers a no-nonsense, direct approach to cut objects such as tatami and bamboo to promote perfection. Like the karate enthusiast breaks boards for correct technique, focus and confidence, the swordsman cuts objects to understand the dynamics of cutting and follow-through.

Tameshigiri (also known as test cutting) offers swordsmen proper and correct sword control while improving cutting skills. Various cuts and procedures (including roku-dangiri) are honed to perfection.

The sword's blade produces an optimum cut when the sword enters the object at a 30-40 degree angle. All cuts – whether they are right, left, diagonal, downward, upward, horizontal or vertical – must be done with conviction, sincerity and determination.

The first few cuts are usually performed on thin tatami or bamboo. After warm-up on thinner pieces, the swordsman can go on to thicker tatami.

Everything is taken into consideration in the performance of tameshigiri. Stance, posture, rhythm, ki, angle of cut… even the way the severed pieces drop.

When test-cutting bamboo, tatami or other material, the cut must be precise. The severed piece must be propelled at a 90-degree angle from the cut’s exit. This is called tobi kata. This assures the swordsman a close-to-perfect cut. If the severed piece is propelled away incorrectly, the cut is considered inferior.

Tradition, respect and ritual are of the utmost importance. The strictest of rules are observed in tameshigiri. Long hours of practice improve harmony between the swordsman and his weapon.