# Elegoo Neptune 4 Max review

Budget 420 x 420 x 480 mm Klipper printer for big prints

- Our score: 8.6 out of 10
- Price: $394 (checked Nov 3, 2026)
- Status: on sale
- Best for: budget makers who need very large PLA, PETG or TPU prints
- Skip if: you want a plug and play or enclosed printer
- HTML version: https://robotsforthat.com/robot/elegoo-neptune-4-max/

## Verdict

The Neptune 4 Max is one of the cheapest ways to get a 420 x 420 x 480 mm build volume. Tom's Hardware found it twice as fast as the Neptune 3 Max but buggy, and 3DWithUs liked it for large and batch prints. It suits patient users who want size over speed.

## Pros

- Huge 420 x 420 x 480 mm build volume for the price
- Klipper firmware with Wi-Fi
- 121 point auto leveling
- PEI plate grips PETG without glue (Tom's Hardware)

## Cons

- Buggy firmware and Z offset issues (Tom's Hardware)
- Noisy curtain fan
- Huge footprint and 18.1 kg weight
- Open frame, ABS warps (3DWithUs)
- Slower than CoreXY printers

## Specs

- build volume: 420 x 420 x 480 mm (Elegoo, Tom's Hardware)
- print speed: Up to 500 mm/s (Elegoo); Tom's Hardware says 140 mm/s is the recommended optimal speed
- multi color: No, single extruder (Tom's Hardware)
- enclosure: No, open frame (Tom's Hardware)
- auto leveling: Yes, 121 point inductive auto leveling plus manual knobs (Tom's Hardware)
- max nozzle temp: 300 C, 0.4 mm high flow nozzle (Elegoo, Tom's Hardware)
- heated bed: Yes, PEI textured spring steel plate (Tom's Hardware); max temperature not confirmed
- filament types: PLA, PETG, TPU, ABS (Tom's Hardware); 3DWithUs found ABS warped without an enclosure
- connectivity: Wi-Fi, microSD, USB (Tom's Hardware)
- camera: No (not listed by Tom's Hardware or Elegoo)
- noise: No dB figure; Tom's Hardware called the curtain fan way too noisy
- weight: 18.1 kg; 658 x 632 x 740 mm (Tom's Hardware)
- firmware: Klipper (Tom's Hardware)

## Safety

- recalls: Not checked
- fcc: Not checked
- company status: Active
- warranty: Not checked

## Questions buyers ask

### How big is the Neptune 4 Max build volume?

420 x 420 x 480 mm, per Elegoo and Tom's Hardware.

### Can the Neptune 4 Max print ABS?

It can reach the temperatures, but it is open frame. 3DWithUs found ABS warped and used an enclosed printer instead.

### Is the Neptune 4 Max fast?

Tom's Hardware found it about twice as fast as the Neptune 3 Max but slower than CoreXY printers, with 140 mm/s recommended.

## Sources

1. [Elegoo US store: Neptune 4 Max](https://us.elegoo.com/collections/neptune-series-fdm-printers/products/neptune-4-max-fdm-3d-printer)
2. [Tom's Hardware: Elegoo Neptune 4 Max review](https://www.tomshardware.com/3d-printing/elegoo-neptune-4-max-review)
3. [3DWithUs: Elegoo Neptune 4 Max review](https://3dwithus.com/elegoo-neptune-4-max-review-3d-printer-testing-settings-tips)