This Knex cannon is one of the easiest cannon to build because it takes very few parts, and it is small yet powerful.
It shoots the small Knex rods that can shoot at least 10 to 50 feet with some good rubber bands.
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Step 1: Step One: Getting the Parts for the Cannon
In the picture is the list of parts that you will need to get started.
Step 2: Part Two: Building the Cannon
The pictures have the instructions in them.
Step 3: Step Three: the Firing Pin
the instructions are in the pictures
Step 4: Step Four: the Base
same as the last two
Now it is ready to shoot! Just be careful what you shoot at because it can break glass.