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Neptune 4 Pro
The Elegoo Neptune 4 Pro is a FDM 3D printer released in 2023 by Elegoo, with a build volume of 225×225×265 mm and MSRP of €329. Claimed maximum speed: 500 mm/s.
Manufacturer's suggested retail price (MSRP). Not the store price — the actual price may vary.
Our take on the Neptune 4 Pro
The Neptune 4 Pro is a fast open printer at a low price: Klipper pre-installed, a dual-gear direct extruder, a 300 °C nozzle, a claimed 500 mm/s and 121-point automatic levelling, with a 225 × 225 × 265 mm volume. It's for people who want speed in a single colour and don't mind some tinkering.
Within the family, the Neptune 4 Plus offers much more volume (320 × 320 × 385 mm) and the Neptune 4 is the base version with an identical volume. If you're after ABS or ASA, the same brand's Centauri Carbon is enclosed.
What it lacks: a camera, multicolour or an enclosure, and its nozzle is brass, so abrasive filaments call for a hardened-steel swap. It slices with Elegoo's build of Cura, though it's also OrcaSlicer-compatible.
Written from its specs and the sources cited at the end of this page; we haven't tested it in person.
Technical specifications
| Technology | FDM |
|---|---|
| Build volume | 225×225×265 mm |
| Weight | 8.7 kg |
| Max speed | 500 mm/s |
| Max acceleration | 8,000 mm/s² |
| Max nozzle temp | 300 °C |
| Nozzle material | brass |
| Drive | direct |
| Flow rate | 32 mm³/s |
| Max bed temp | 110 °C |
| Bed material | PEI plate |
| Auto-leveling | 121-point auto mesh |
| Enclosed | No |
| Heated chamber | No |
| AMS compatible | No |
| WiFi | Yes |
| Camera included | No |
| Official slicer | Elegoo Cura |
| OrcaSlicer support | Yes |
| Power | 350 W |
| Noise | — |
What materials can the Neptune 4 Pro print?
This comes from four facts on its spec sheet: the nozzle reaches 300 °C, the bed 110 °C, and the machine is open-frame with a direct-drive extruder. Those four facts decide most of the list: nozzle temperature sets the ceiling on what you can melt, the bed decides whether the first layer sticks, the enclosure keeps large parts from warping, and the extruder type rules flexibles. We don't test the machine — this is guidance derived from verified data, not a guarantee.
In short: it prints PLA, PETG, TPU (flexible) without a fight, and it can reach ABS, ASA, Nylon (PA), Policarbonato (PC) with conditions — the detail for each is below.
| Material | Prints it? | Why |
|---|---|---|
| PLA | Yes | Yes. PLA has no special needs: any FDM printer like the Neptune 4 Pro prints it out of the box. |
| PETG | Yes | Yes. With a nozzle up to 300 °C and a bed up to 110 °C it comfortably meets PETG's needs. |
| TPU (flexible) | Yes | Yes. It has a direct-drive extruder, ideal for flexibles; prints TPU well (go slow). |
| ABS | With caveats | With caveats. It reaches 300 °C, but it's open-frame: ABS can warp and ventilation is advised. Doable in a draft-free spot or by adding an enclosure. |
| ASA | With caveats | With caveats. It reaches 300 °C, but it's open-frame: ASA can warp and ventilation is advised. Doable in a draft-free spot or by adding an enclosure. |
| Nylon (PA) | With caveats | With caveats. It reaches 300 °C but is open-frame; Nylon warps in drafts and absorbs moisture. Enclosure + drying almost mandatory. For carbon-fibre variants, use a hardened-steel nozzle. |
| Policarbonato (PC) | With caveats | With caveats. It has the temperature (300 °C) but is open-frame; PC warps badly without an enclosure. Only with one added. For carbon-fibre variants, use a hardened-steel nozzle. |
Need the materials it struggles with? These printers handle them
ABS, ASA, Nylon (PA), Policarbonato (PC)
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Sources & references
Specs cross-checked against these public sources:
- Web oficial fabricanteManufacturer page
Specs taken from the sources cited above; we have no recorded date for the last check. Confidence in the data: medium.