Introduction: Knex Catapult
A Catapult made from Knex
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Step 1: What You Need
You will need:
1 Yellow Rod
4 Blue Rods
4 White Rods
1 Green Rod
6 Red Connecters
2 Yellow Connecters
4 Single Grey Connecter/Stopper things
2 Halves of a Broken Yellow rod (optional - I broke one and found it made a good trigger)
1 Elastic Band
Step 2: The Base
Assemble the 2 halves of the base (pic 1)
Join them together with the yellow connecters, but put the elastic band over one of the white rods (as shown in pic 2)
Step 3: The Arm and Axle
Assemble the arm
Step 4: Assembely
Step 5: Optional Trigger
Pull back the catapult arm, and slot half of a yellow rod into the yellow connecter to hold the arm back. Do the same for the other side.
Load up the catapult then pull out the pins to fire.