Water Rocket Fins and Nose cone

thingiverse

Here is the rewritten text: To boost your standard 2-liter Pepsi bottle water rocket's performance, add fins that slide over the bottle and stay put due to water pressure. For even greater distances, attach weight to the nose cone using putty or play dough. Safety always comes first: launch only in an open area far from people, as a weighted pointed nose cone can cause significant damage if not handled properly.