Mechanical Piston Key Hanger / Engine Block Style

Mechanical Piston Key Hanger: B6 Engine Style This is a mechanical key hanger for every car enthusiast. Inspired by the legendary Mazda B6 engine, I spent hours sketching linkage mechanisms on paper to bring this "moving" art piece to life. How it works: When you hang your keys, the internal mechanism converts the weight into vertical movement, making the piston rise from the cylinder block. The entire mechanism is 100% 3D printed—no springs or extra screws are needed. Story: I wanted to bring the excitement of the garage into the home. Before touching CAD, I repeatedly calculated the linkage on paper to find the ideal movement. It takes 11 hours to print on an A1 mini, but every second reflects a passion for car culture. Print Settings: Filament: PLA/PETG (Silver for pistons recommended). Wall Loops: 3+ for strength. Support: Tree supports recommended for internal cavities. Note: If the movement feels stiff, a small drop of lubricant works wonders! ピストン連動型メカニカルキーハンガー：B6エンジン・スタイル ロードスタ