3D-Printed Baking Soda & Vinegar Car – Science in Motion!

Turn everyday kitchen ingredients into real motion! This 3D-printable car uses a simple baking soda and vinegar reaction to create thrust and propel itself forward — a fun, hands-on way to explore chemistry and physics. Features 🔹 All-in-One STL File: Print the entire car (chassis, wheels, and nozzle) in one piece — no assembly required. 🔹 Easy to Use: Just add a small plastic cup or bottle cap for the reaction, mix baking soda and vinegar, attach a balloon, and watch it race! 🔹 Safe & Educational: No batteries or motors — just air pressure created by a natural chemical reaction. 🔹 Great for Kids & Makers: Perfect for science fairs, classroom demonstrations, and backyard experiments. 🔹 Printable on Any FDM Printer: Designed for PLA or PETG; fits within a 220 mm print area. How it works Add baking soda and vinegar in the small reaction cup on the chassis. Let the gas inflate the balloon connected to the rear nozzle. As the balloon releases air, it pushes the car forward — pure Newton’s Third Law in action! Specifications File type: .STL (all-in-one model) Print size: ~180 × 90 × 70 mm Print time: ~4 hours (depending on printer & settings) Material: PLA / PETG recommended Difficulty: Beginner friendly Educational value Demonstrates propulsion, pressure, and gas-release principles — perfect for STEM learning and fun weekend experiments! ⚠️ Use outdoors or in a tray; reaction can get fizzy! Not for sealed pressure use — keep it safe and fun.