Obtaining and Maintaining Throwing Knives

To obtain throwing knives, look through the pages of any
martial arts magazines and you can usually find a supplier.
Knives may also be found in surplus shops, at gun shows
and at flea markets
How many throwing knives should a Ninja own? For
effective practice, a Ninja should own at least a dozen knives
of the same kind. That is a minimum number. If they cannot
be acquired all at once, they should be purchased a few at a
time over a short period. Twenty or two dozen knives would
be more advantageous for the Ninja who can afford them.
This will cover any knives which are damaged, lost, etc.
Throwing knives are relatively easy to maintain. They
should be kept clean, dry and rust free. Some throwing
knives do not have to be sharpened. Others can be sharpened
with a mill-bastard file. Still others require the use of an oil
stone. Take the appropriate sharpening measures, depending
upon which type of throwing knives are owned.
Throwing knives are difficult to destroy under normal use.
If they become bent, they can be hammered or bent flat once
more. On the rare occasion that a throwing knife does break,
it should be thrown away and replaced.