Bob Truax's Sea Dragon Rocket

This is a 1mm to the foot scale model in 123D Design (~304:1 scale). The build is separated into several pieces, and printable on a machine with a ~320 mm build height. The pictured model was made on a Leapfrog Creatr.
VERY LONG video (almost 2 hours!) on the making of this design with a lot of tips on using 123D Design.
http://youtu.be/TDXgm3H5yfU?list=UU_C71YcQutdV_TsXAStCG4A