The Making of my Rocket

First I started out with two empty two liter bottles.

Using scissors I measured 6 inches from cap up and cut that off to use as the cone. 

I took the cap from the nose bottle and put silly putty and covered pennies in it for weight. 

Then using a piece of a cardboard box I cut three identical triangular fins and covered them in two layers of 

duct tape. 

Then I duct taped the three fins onto the still fully intact bottle.