by freeflyer Jul 9, 2013
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what is drilling conductor.stl for?

This is to help to drill a channel in the rocket fuel (you can see this hollow channel on youtube video). It's help you to drill exactly in the center and coaxial. You should put it on the tail of the rocket and to drill rocket fuel throug the hole of the conductor and then remove it. Please read more about nozzleless rocket motors before to try it.

Make a fin where the tube for launching is and then put the tube in the middle of 2 fins. Then you can add another tube to the opposite side. Or you could just not put a tube and add another fin (so theres 4) then just take a brick out there and launch it off that!

3 of 4 fins would be much better.