A model rocket. V9 is designed for use with Estes B or C class SRBs. V10 is designed for use with Estes A-T (mini) class SRBs. Use V10 for best results. WARNING: V9 is VERY unstable and WILL tumble out of control at ~50 ft altitude. The V10 flys AMAZINGLY and we lost sight of it while launching. Both print without supports using ABS. Does anyone have a good name for this rocket?V9: I printed this using ABS with 230C extruder and 120C base with .3mm resolution (MakerWare default: Low). I recommend printing with a raft, because the fins may curl up. V10: According to MakerWare, on Low quality it will take 1h 4m and use 13.68g of filament, including the raft. I printed this with Standard quality ABS. I also recommend using two separate prints. Note: you may have to make a small cut to the nosecone to make it fit cottectly