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K’nex Catapult Design Instructions #2
1. K’nex Catapult Design Instructions #2
Required Materials
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)
2. Step: 1
Catapult Base
Needed Parts
4 Yellow Rods
4 Blue Connecters
4 Purple Connecters
2 Blue Rods
Step: 2
Base of Arm
Needed Parts
1 Blue Rod 1 Grey Connector
4 Blue Spacers 2 Grey Spacers
3. Step: 3
Frame
Needed Parts
2 Red Rods
2 Red Connecters
Step: 4
Finish Arm
Needed Parts
1 Grey Rod 1 White Connector
1 Yellow Rod 7 White Rods
2 Tan Clips
4. 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.