K’nex Catapult Design Instructions #2

Required Materials

Step: 1

Catapult Base

Rods

Grey/Black (1) Reds (4) Yellows (5) Blues (3) Whites (7)

Connecters

White (1) Red (2) Yellow (2) Purple (4) Blue (4) Grey (1)

Other

Blue Spacers (4) Grey Spacers (2) Tan Clips (2) Same Size Rubber

Bands (2)

Needed Parts

4 Yellow Rods4 Blue Connecters4 Purple Connecters2 Blue Rods

Step: 2

Base of Arm

Needed Parts

1 Blue Rod 1 Grey Connector 4 Blue Spacers 2 Grey Spacers

Step: 3

Frame

Needed Parts

2 Red Rods2 Red Connecters

Step: 4

Finish Arm

Needed Parts

1 Grey Rod 1 White Connector 1 Yellow Rod 7 White Rods 2 Tan Clips

Step: 5

Rubber Bands

Needed Parts

2 Rubber Bands

Put one side of the Rubber Band underneath the middle White Rod and the other side on the Tan Clips. Then use the other Rubber Band stretched across the Red Connectors, overlapping the other Rubber Band.