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.

Filament (FDM)320 × 320 × 400 mmOpen frame

Documentary analysis · Not personally tested

See the manufacturer and sellers

Elegoo Neptune 3 Plus, manufacturer image — Image provided by Elegoo. Equipment shown does not establish the contents of the selected bundle.

Specification sources reviewed 2026-09-12. These are manufacturer claims, not measurements by Find My 3D Printer.

Why 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.

The specifications that matter

Process: FDM
Nominal build volume: 320 × 320 × 400 mm
Enclosure: Open frame
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.

Allow room for supports and the chosen orientation. Confirm the exact nozzle, feeder, included accessories and installation clearance against the manual and seller’s listing.

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.

Frequently asked questions

Does the Neptune 3 Plus share parts with the Neptune 3 Pro?

Yes, Elegoo's own store lists a nozzle kit shared across all three Neptune 3 models (Pro, Plus, Max), which simplifies maintenance and replacing wear parts.

Does the bed take a long time to heat up?

A 320 × 320 mm bed needs more time than a compact footprint to reach temperature, worth factoring in for short, repeated print jobs.

Do you need an enclosure for ABS on this model?

The frame stays open per Elegoo; ABS is still printable but benefits from a warm, draft-free room, even more so on a bed this size.

Sources and limits

We have not measured noise, real printing speed, accuracy or reliability. Manufacturer images do not establish the contents of the selected bundle.