The Heart Lock: Functional 3D-Printed Padlock

Design & MechanicsMinimalist Engineering: The entire lock consists of only four internal/structural parts plus two keys (the right key and the wrong key).Snap-Together Assembly: No screws, glue, or external hardware required. The parts are designed to click into place for a functional bond.Support-Free: The geometry is optimized for 3D printing, featuring clean angles that require no support material.Embedded Design on the front for multi-color decoration.Printing RecommendationsNozzle: 0.4mmLayer Height: 0.15mm to 0.2mmWalls/Perimeters: 3–4 perimeters for strength, especially around the shackle.Material: Looks stunning in "Silk Gold" or “Ruby Red”.Assembly NoteAssembly relies on a tight snap-fit. Ensure your bed is level and your flow rate is calibrated to prevent over-extrusion, which can cause the snap to be too tight or loose.