Have you ever needed to print something so large that you had to slice it into a dozen pieces, just to spend days gluing and sanding them together? The Elegoo Neptune 4 Max is the ultimate solution for Makers who want to think bigger. Offering an enormous 420 x 420 x 480 mm workspace, you finally have the freedom to print full-sized armor, sprawling terrain, or entire batches of parts in a single, seamless job. Better yet, you won't be waiting weeks for those giant prints to finish. Powered by a Klipper high-speed motherboard and an ARM 64-bit quad-core processor, the Max achieves astonishing speeds up to 500mm/s with 8,000mm/s² acceleration.

Moving a massive print head and pushing out huge amounts of plastic quickly requires serious engineering. Elegoo tackled this by utilizing a lightweight dual-gear direct drive extruder with a 5.2:1 reduction ratio. Paired with a 60W ceramic heating element and a 300°C all-metal extended hotend, it melts and extrudes everything from standard PLA to high-temp Nylon effortlessly. To instantly freeze those rapid layers and prevent sagging, the X-axis carries a dedicated auxiliary cooling module boasting multiple powerful blower fans, giving you crisp corners and flawless overhangs even at scale.

Despite its towering size, running this machine is incredibly user-friendly. A 121-point automatic bed leveling sensor ensures that your first layer is laid down perfectly across the massive PEI magnetic platform. Furthermore, built-in X and Y axis acceleration sensors automatically calibrate resonance compensation (Input Shaping) to eliminate vibrations and ghosting, keeping your outer walls buttery smooth. With built-in Wi-Fi and LAN connectivity, you can monitor and manage your biggest projects right from your PC!

Typical Applications

• One-Piece Cosplay: Print full-sized helmets and chest pieces in a single run, significantly reducing post-processing and assembly time.
• Industrial Prototyping: Rapidly produce large-scale functional housings, automotive parts, or structural models.
• Massive Dioramas & Terrain: Create giant, detailed table-top gaming landscapes or architectural models with ease.

Key Features and Benefits

• Colossal Build Volume – A giant 420 x 420 x 480 mm workspace allows you to print enormous projects in a single piece without needing to slice and glue.
• Klipper-Powered Speed – Comes pre-installed with Klipper firmware to reach mind-blowing print speeds up to 500mm/s and accelerations up to 8,000mm/s².
• 300°C Direct Drive Extrusion – The dual-gear direct extruder features a 5.2:1 reduction ratio, ensuring reliable feeding for everything from flexible TPU to high-temp Nylon.
• Built-in Resonance Calibration – Features onboard X and Y axis acceleration sensors to automatically calibrate Input Shaping, resulting in smooth, ghost-free prints at high speeds.
• 121-Point Auto Leveling – A high-precision sensor scans 121 points across the massive bed to ensure a perfect first layer with minimal manual effort.
• Versatile Connectivity – Send your sliced files straight to the printer over the air using the built-in Wi-Fi or manage large projects via LAN connections.