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I've never used these rockets before, so I built a test rig for my son. OK, it's a car, but the spoiler counts as a wing! Inserted a stick-like fuse into the hole at the rear, lit it and then watched it fizzle out. Left it for a while, then tried again. Eventually, it ignited and whizzed off leaving a satisfying trail of smoke. I must get an electric igniter. It has a hot tip: insert in the hole to start the rocket.
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