Engineer Activity Badge
Catapult Plans
By Barb Stephens
Data supplied by Pack 114Basketball Catapult
Instructions
- Base, backboard and hoop are made from a 1"x4" board.
- Drill holes in base and backboard 3/8" diameter and 1/2" deep.
- Cut a slot at a 15 degree angle in a cube block large enough for the handle of a plastic spoon.
- Cut hole for the hoop first; then finish cutting the hoop piece.
(We used a slice of 2" diameter PVC pipe and screwed it into backboard.)- Glue the hoop to the backboard; then glue dowel rod into backboard and base.
- Glue cube block to base and insert spoon into slot.
- Cut string and attach one end to dowel rod at base and the other end to any 1" sized ball (ping pong balls work well).
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