Classic Maranello – Thrustmaster TH8S Shifter Knob

This 3D model is a spherical gear shift knob designed for racing simulators, combining the vintage aesthetics of classic gated shifters with the practicality of FDM 3D printing.

🌟 Key Features

• 🖐 Ergonomics & Grip: The classic 50 mm spherical shape (inspired by iconic historic sports cars) provides a comfortable and natural grip, ideal for both classic driving and rapid gear changes.

• 🔢 Engraved Tactile Details: The shift pattern is engraved on the top surface, ensuring the numbers remain clean and clear without irritating your palm during use.

• 🏁 Iconic "Old School" Style: Replaces the stock knob to visually transform your sim rig with an elegant, vintage race-car look.

• 🎯 Perfect Compatibility: Specifically modeled around the official Thrustmaster adapter to ensure a solid, stable fit on the TH8S shaft without play.

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• 🧵 Recommended Material: PLA or PETG Silk Silver to achieve a realistic machined-metal look.

• 📐 Layer Height: 0.16 mm – 0.20 mm to highlight the subtle layer lines on the sphere while keeping the shift pattern crisp.

• 🧱 Infill: 25% – 40% (Grid or Gyroid) for great structural strength and a solid feel.

• 🛠 Orientation & Supports: Print vertically, resting flat on the bottom collar. Supports are minimal or unnecessary depending on your printer's cooling capability.

⚖ Pro-Tip for a "Premium" Weight (Optional)

To make shifting feel even smoother, pause the print roughly halfway through the sphere and insert 2–3 M10 steel nuts into the internal cavity—this gives it the satisfying weight of a real solid aluminum knob!