PVC Catapult
This catapult was constructed using leftover pvc pipe materials.
Supplies
Hand saw
small cup
rubber bands
masking tape
duct tape
pvc scraps
Design and Assembly
Choose the dimensions of your project based on the available material. You will want a square or triangular base and definitely a support to brace the vertices arms of the catapult. I used leftover connectors for the corners but you could use duct tape.
Spring Load
i used rubber and looped together for the spring - loaded action. You will also attach the orange cup for holding the load.