The CMR pop lug is almost identical to the way we did ours. Instead of a folded piece of wire at the top, we used a single strand of wire, letting us poke a smaller hole in the rocket. We also used some small copper wire instead of music wire. It worked, so we were happy.

We did everything we could to make it as light as possible, thinking that a heavy pop pod would waste enough energy at liftoff to nullify any drag advantages. Considering we were about 12 and had no real science background, I'm actually amazed today that we thought through it that much back then.

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I love sanding.