Things You'll Need
Instructions
Select a long rod and attach one half-circle connector to each end. The rod doesn't have to be any specific length, but it will determine the length of your final project. Repeat this process to create the other side of the K'nex car.
Insert a shorter rod into the opening of a connection point and push it down until you hear it click. The rod should be perpendicular to the connector piece after inserting it. Repeat this process to connect this same rod to the other side of the car. This will become the front of the car and the front axle.
Make the back of the car by using the same process and same size rod you used to form the front and front axle.
Position the sides of the K'nex car so there is approximately ½ inch between the sides and the ends of the axle rods. At this point, you should have a rectangle base for your K'nex car.
Construct the top and sides of the car by joining pieces and connectors to the corners. Use whatever design you like.
Slide a wheel onto one end of an axle rod and hold it in place with an end cap. Do the same for the other three axle rod ends.