Cyenobite writes –

Just thought I’d send you this link I just uploaded to youtube tonight. It’s from our MakePhilly picnic/bar-b-q on Sunday (8/5) where several of us made some soda bottle water rockets. My rocket was the Black and Green one… I used your instructions from Issue 05, with a few minor tweaks of my own. I used foamcore for the fins and attached them with 5min epoxy. Much to my surprise they were pretty durable and light weight. Credit goes to Josh for the launch base.

MakePhilly Water Rockets highlights – Link.