Clustered Model Rocket

This is a clustered 3d-printed model rocket with slots for fins and mounts for shock cords. Reaches 1000+ ft (3 C6-5's)! Additionally, it was simulated in Open-Rocket accurately. 

Other needed Material:

1/8 in Shock Cord

3 of the same motor

Ground Launch Tower with 1/8 metal rod rail

LARGE battery ( I used a 9V 5AH battery from Home Depot though this is overkill).