3D-Printed Water-Cooled Rocket engine Project Build
Mr. More Gooder spends his time in the workshop turning everyday ideas into hands-on experiments. This time he decided to tackle a stubborn problem with rocket engines built on standard FDM 3D printers. Plastic parts usually fail quickly once the fuel ignites because the heat softens and melts the material. He came up with a direct fix by routing water through channels inside the printed walls to carry the heat away before the plastic could give way.

China AI Collar Pet Bark Meow Pettichat
A startup in Hangzhou just released a lightweight collar that listens to dogs and cats and turns their sounds into short sentences on your phone. Named Pettichat, the device weighs only 27 grams and sits comfortably around a pet’s neck. It picks up vocalizations through built-in microphones while motion sensors track posture, movements, and other physical cues at the same time.

Aston Martin DB9 Corvette Swap Flame Thrower
Silver paint catches every ray of sunlight across the smooth curves of this 2006 Aston Martin DB9. A linear actuator tilts the front fascia forward on hinged brackets. Twin assemblies shaped like miniguns slide into view right behind the grille. Propane and oxygen tanks stored in the trunk feed these devices so they shoot real flames when activated. Smoke canisters mounted on the rear subframe release thick clouds for equally dramatic exits. These effects turn the car into a rolling tribute to James Bond without any actual weapons involved.