Picture of How to make a knex Balistic Knife
this is a instructable which will take about 5 minutes to build a knex balistic knife. 
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Step 1: Step 1: the chamber of the knife

Picture of Step 1: the chamber of the knife

pic 1: build this

pic 2: add the red rod and red conector with white rod attached

pic 3: another view

pic 4: build this

pic 5: insert through middle hole

pic 6: add elastic band

Step 2: Step 2: the Knife

Picture of Step 2: the Knife
pic 1: build this

pic 2: insert through middle hole

Step 3: Have fun with this

Picture of Have fun with this
now go have fun and any moddifications please post to me i would also like to know what you think of the knife thanks for looking at this tutorial :D please dont put on bad comments it is my first instructable        :D
i have a better knex ballistic knife
skyfaller4 years ago
You should try this:http://www.instructables.com/id/Blade-firing-K-nex-knife/
logitech5374 years ago
if you replaced the grey rod with a black one it would stop the firing rod bending as much when you have 3+ strong bands on it
boxing mag3 (author)  logitech5374 years ago
yes that would work
There are two 'l's in ballistic.
boxing mag3 (author)  RMConstruction4 years ago
im sorry my spelling isnt that good
~KGB~4 years ago
it needs to be improved...
boxing mag3 (author)  ~KGB~4 years ago
it only took me like 5 minutes to come up with but if you have any improvements please post
alri. i dont wanna make it
boxing mag3 (author)  ~KGB~4 years ago
why it works really good (fires an allright distance)
well its hardly goin about 20ft, its a bolk trigger.
boxing mag3 (author)  ~KGB~4 years ago
there is nothing wrong with block triggers andi can get about 20 ft but thats only because ihave 1 elesticbandif you puton more you could reach a high amount of power
yes there is.