For larger prints
Elegoo Neptune 3 Plus
An open-frame FDM printer with a 320 × 320 × 400 mm nominal build volume, 49-point auto bed leveling, and a nozzle advertised up to 260°C per Elegoo.
In short The Elegoo Neptune 3 Plus is an open-frame filament (FDM) 3D printer with a 320 × 320 × 400 mm (12.6 × 12.6 × 15.7 in) build volume. Elegoo claims a 260 °C (500 °F) nozzle and a 100 °C (212 °F) bed; the printer measures 578 × 533 × 640 mm (22.8 × 21 × 25.2 in) and weighs 14.2 kg (31.3 lb).
Documentary analysis · Not personally tested
FDM · Open frameWhy consider it?
A 320 × 320 × 400 mm build volume, 49-point auto bed leveling, a dual-gear direct drive extruder, and quiet operation advertised per Elegoo.
What to verify
The frame stays open with no enclosure, and a bed this size heats up more slowly than a compact footprint. Exact box contents should be checked on the retailer's listing.
Elegoo Neptune 3 Plus specifications
- Technology
- Filament (FDM)
- Build volume
- 320 × 320 × 400 mm (12.6 × 12.6 × 15.7 in)
- Printer dimensions
- 578 × 533 × 640 mm (22.8 × 21 × 25.2 in)
- Weight
- 14.2 kg (31.3 lb)
- Enclosure
- Open frame
- Max nozzle temperature
- 260 °C (500 °F)
- Max bed temperature
- 100 °C (212 °F)
- Multicolor
- No stock multicolor system; a single extruder with dual-gear direct drive, identical to the Neptune 3 Pro's per Elegoo.
- Materials
- PLA, TPU, PETG, ABS, and ASA per Elegoo, sharing the same nozzle and hotend as the Neptune 3 Pro and Neptune 3 Max.
- Screen
- 4.3-inch touchscreen
- Listed features
- Auto bed leveling, filament runout sensor
How much space does it need?
The Elegoo Neptune 3 Plus measures 578 × 533 × 640 mm (22.8 × 21 × 25.2 in) for a 320 × 320 × 400 mm (12.6 × 12.6 × 15.7 in) build volume: the dashed box is the printer, the solid cube the nominal build volume, about 21% of the machine’s volume. Add room for the spool or multicolor unit, cables and ventilation.
Source: official Elegoo pages (us.elegoo.com, uk.elegoo.com), checked October 6, 2026. Manufacturer claims, not our measurements. Build volume is nominal: orientation, supports and reserved zones can reduce the usable space.
Which projects is it for?
The Neptune 3 Plus carries the Neptune 3 Pro's architecture onto a much larger plate, with a 320 × 320 × 400 mm nominal build volume per Elegoo, for tall parts, multiple batches, or objects that won't fit on a compact footprint.
49-point auto bed leveling, denser than the Pro's to compensate for the larger surface, aims to keep the first layer consistent despite the bigger plate, a sensitive point on an open frame this size.
Materials and setup
The Neptune 3 Plus shares the same nozzle kit as the Neptune 3 Pro and Neptune 3 Max per Elegoo's own store listing, pointing to an identical nozzle and hotend advertised up to 260°C, compatible with PLA, TPU, PETG, ABS, and ASA.
The dual-gear direct drive extruder, common across the whole Neptune 3 lineup, keeps flexible filaments manageable despite this Plus version's larger footprint.
What the bundle includes or not
Elegoo advertises quiet operation and a dual-gear extruder identical to the rest of the Neptune 3 lineup. Exact accessories included (spare nozzles, tools) should be checked on the retailer's listing.
A 320 × 320 mm bed needs more time to heat up than a compact footprint, worth planning for on short, repeated prints where preheating takes up proportionally more of the total time.
Alternatives to compare
For a more compact footprint and lower price, the Neptune 3 Pro covers projects that don't need this large a plate. To go even bigger, the Neptune 3 Max reaches 420 × 420 × 500 mm per Elegoo.
The budget buying guide and the beginner's buying guide help judge whether this mid-size format fits your projects.
Similar printers to compare
Sources and limits
- Source: official Elegoo pages (us.elegoo.com, uk.elegoo.com), checked October 6, 2026. Manufacturer claims, not our measurements.
- How we assess specifications
We have not measured noise, real printing speed, accuracy or reliability, so none of these is rated here.