The Backstop

Whether a target is used inside or outside, it needs to have
a backstop to stop the knives thrown at it. The backstop
provides a convenient place to hang a variety of targets,
most of which can be made out of paper. Constructing a good
backstop that will last for years is often neglected, but it is as
important as purchasing the right knives. It requires a
certain amount of time, work and money, but every serious
practitioner of Ninjitsu should make one. A basic design for
NINJA KNIFE THROWING
a portable/stationary backdrop is given below. The design is
a simple one, and can be modified to fit the specific needs of
the user (see Diagram 3.1, throwing knife backstop).