The Elegoo Neptune 4 Max is one of the largest FDM 3D printers aimed at home and professional users who need to print huge models at once without the need to split them. The printer relies on the advanced Klipper operating system to provide super printing speeds while maintaining detail quality. 📊 Key Technical Specifications: Print Volume: Very large, measuring 420x420x480 mm3. Maximum Print Speed: Up to 500 mm/s (recommended default speed is 250 mm/s). Firmware: Integrated Klipper, enabling advanced features like Input Shaping to reduce printing vibrations caused by speed. Extruder System: Dual-Gear Direct Extruder with a 5.2:1 gear ratio to ensure smooth and precise filament flow. Nozzle Temperature: Up to 300°C, allowing the use of various materials. Bed Temperature: Up to 85°C. ✨ Printer Highlights: Giant Build Volume: The ideal choice for armor and Cosplay creators, architectural models, and initial car parts in their full size without the need for cutting and pasting. Super Speed thanks to Klipper: With a quad-core processor and Klipper system, the printer can finish large models in record time compared to previous generations. Advanced Auto Bed Leveling: Supports an automatic leveling system via 121 detection points to ensure perfect first layer adhesion across the entire vast area. Powerful Cooling System: Features a wide fan behind the print head (Curtain Fan) to quickly cool the plastic during high-speed printing. Flexibility and Reliability: Equipped with a Filament Runout sensor and the ability to resume printing after a power outage. Multiple Connectivity Options: Supports connection via Wi-Fi, LAN, or USB flash drive. The printer has been used very little. The reason for selling is that I needed to print large items for a project, and I no longer need it.