ModularBallCar – Magnetic Mini Car with 10 mm Steel Balls | Customizable Base + 3 Swappable Shells

ModularBallCar is a fully modular 3D‑printed mini‑vehicle system featuring a magnetic base and a smooth rolling mechanism using four 10 mm steel balls . The project includes three interchangeable shells (Brick, Car, and Custom Base) plus a STEP file for designing your own custom body. This model is perfect for makers, students, and anyone who enjoys customizable 3D‑printed toys. Easy to print, fun to assemble, and ideal for remixing. 🚗 Included Shells 🔴 Brick Style A block‑inspired shell, great for adding printed accessories or creative customizations. 🔵 Car Style A clean, simple mini‑car body designed to test the rolling system and magnetic attachment. 🟡 Custom Base A neutral platform for designing your own shell. Includes a STEP file for CAD modeling. 🧩 Key Features Rolling system with 4× 10 mm steel balls 4‑point magnetic mount (Ø6×3 mm magnets) Interchangeable shells STEP file included for custom designs Modular, easy to print, and perfect for remixing Great for educational and creative projects 📐 Technical Documentation The project includes a complete technical drawing set with dimensions, sections, and a bill of materials. Examples from the document: “6MM_STEEL_BALL – Qty 4 – Steel” Key dimensions such as “Ø6.2”, “Ø9.2”, “74”, “50”, “29.4” 🖨️ Print Settings Material: PLA or PETG Layer height: 0.2 mm Infill: 20–30% Supports: Not required for the base Magnets: Ø6×3 mm Steel balls: 10 mm 📦 Files Included Magnetic base 3 shells: Brick, Car, Custom Base STEP file for custom modeling Technical drawings (PDF) 🛠️ Ideal For Makers who enjoy modular designs Students in engineering or design 3D modeling enthusiasts Remixers and customizers 🔍 Recommended SEO Tags modular car magnetic car 10mm steel ball ball bearing car customizable car 3d printed toy modular toy magnet toy rolling car remixable car cad step file printable car sphere car magnet mount