ELEGOO Neptune 4 Plus 3D Printer and Rapid PLA+ Filament - High Speed

In this review of the ELEGOO Neptune 4 Plus, the conclusion is straightforward: this machine is for makers who want to move from hobby prints to larger, faster projects without sacrificing detail. The standout reason to consider it is the balance of high speed and accuracy - the Neptune 4 Plus runs Klipper-based firmware with defaults tuned for rapid output while providing sensors and input shaping to preserve print quality. It ships with a 1kg spool of Rapid PLA+ so users can start printing after basic setup, making it a strong pick for hobbyists and small workshop users who care about throughput.

Key Features

• Lightning-fast speed: Klipper firmware enables up to 500mm/s printing and high accelerations for much shorter print times when paired with rapid filament.
• Bigger build volume: The 12.59x12.59x15.15in (320x320x385mm) platform lets you print larger models or multiple parts in a single run.
• Precise motion control: Input shaping, pressure advance and accelerometer-assisted calibration reduce vibration and improve small-detail accuracy at speed.
• Direct drive extruder: Self-developed dual-gear direct drive with a 5.21 reduction ratio offers stronger, smoother extrusion and better handling of flexible filaments.
• High-temp hot end: Extended hot end with a 300 C-capable nozzle, 60W ceramic heater and PID auto-calibration supports PLA, PETG, ABS, TPU and nylon.
• Ready to start: The package includes the Neptune 4 Plus printer and a 1kg spool of 1.75mm Rapid PLA+ so prints can begin after initial setup.

Who It's For

The Neptune 4 Plus is best for experienced hobbyists, makers and small-run prototypers who want faster prints and a larger build area without stepping up to industrial hardware. Its Klipper firmware and high acceleration settings reward users willing to tune profiles and test rapid filament for optimal results.

Users who prefer a plug-and-play experience with minimal calibration time or those needing ultra-quiet, slow-speed office printing might want a simpler desktop printer. Also, if you need a fully leveled bed out of the box, the Neptune 4 Plus requires initial leveling per the included tutorial.

Pros & Cons

Pros

• High top speeds and acceleration reduce print times for large or multiple-part jobs.
• Large 320x320x385mm build volume expands project size and batch printing options.
• Direct drive extruder and high-temp nozzle improve material compatibility and reduce clogging risk.
• Automatic calibration aids and input shaping help maintain print quality at speed.

Cons

• Bed is not level at delivery, so initial setup and leveling are required before first prints.
• Reaching the highest speeds reliably may require rapid filament and additional tuning for best results.

Specifications

Our Verdict

The ELEGOO Neptune 4 Plus is a compelling choice for makers who value speed and a generous build volume without abandoning print fidelity. It delivers excellent value for users willing to perform initial leveling and tuning, and the included Rapid PLA+ spool gets you printing quickly. For fast prototyping and larger hobby projects it is a practical, high-performance option.

Frequently Asked Questions

Where can I download the latest firmware?
You can download the latest firmware from the ELEGOO official website per the included instructions.

Is the bed level out of the box?
No, the bed is not leveled from the factory; follow the included leveling tutorial video for best results.

What filament is included?
The printer ships with a 1kg spool of 1.75mm Rapid PLA+ so you can start printing after setup.