How to Make a Ninja Knife With K'NEX

Take the white connector that looks like a snowflake and set it to the side. Next, take four of the long green sticks and place them in the connectors of the white piece. Place the green sticks in every other connector on the snowflake. There should be four connectors occupied by sticks, and four unused connectors.

Place the snowflake-like figure flat on the table with the sticks sticking out upward. Take six of the short red pieces and six of the short black pieces. Connect one red piece to two of the green sticks where they meet the snowflake. Then, alternate and take a black piece and place it on top of the red piece and connect it to the two unused green sticks. Continue to alternate until all 12 pieces have been used.

At the side of the four green sticks where there are no pieces, take another circular connector and connect the sticks to the circular connector. This makes the top of the handle. Next, add the last green stick and have it stick up on one side of the connector. On the other side, use the orange stick, also sticking upward. These pieces help make the blade of the knife.

Take the last of the small red pieces and place it just under the bottom of the upper part of the Ninja knife handle. Take the remainder of the black pieces and begin connecting the green and the orange stick together. Continue connecting them until reaching the top of the green stick. The orange stick will be a couple of inches taller than the black pieces will reach.

Apart from the knife, connect the half-circle connector and the quarter-circle connector with the small black piece. Connect the two pieces so that the two edges meet. Use this piece to connect the tops of the orange and the green sticks and the K'NEX ninja knife is done.