I have started to convert some of my favorite static paper rocket models to flyable models. My current build is of the Card in Space Mercury Redstone (link available in my Ultimate Paper Rocket Guide). This is a challenging build but a great deal of fun. I converted this model into a flyable 13mm model. The conversion is quite easy and simply means cutting out centering rings for the proper body tube from the disk provided in the build. I did create the tower from toothpicks. I will hopefully post some flight movies soon.Here is my new Mercury Redstone.