3D Printing InfoBuild volume
225 x 225 x 280 mm; printing platform 235 x 235 mm
Advertised dimensions; check usable space and variants.
ELEGOO Neptune 3 Pro
Marlin-based 225x225x280 mm bed-slinger from 2022, still listed in 2026, with a 180 mm/s ceiling and a 260 C nozzle.
Architecture reference
Start here
Explore this printer At a glance
Nozzle temperature
260 C claimed max nozzle temperature - 40 C below the Neptune 4 series
Published limits; hardware and firmware limits may differ.
Sources & dates
Price snapshot
$259.99 on us.elegoo.com, Aug 2026, with the compare-at price also $259.99 - notably more than the newer and far faster Neptune 4 at $219
Dated listing, not a live offer. Read the configuration and region.
Sources & dates
- ELEGOO Neptune 3 Pro Shopify product JSON (price and store publish date) · 2026-08 · vendor
- ELEGOO Neptune 4 Shopify product JSON (variant prices and store publish date) · 2026-08 · vendor
A closer look
Full specifications inside each chapterHardware, software & ownership
Understand the hardware, explore compatible changes and find a diagnostic starting point when something goes wrong. Expand the specification sections for every recorded value, condition and original reference.
Machine & motion
Dimensions, construction and the hardware that moves the print.
Model, variants & pricing5 fields
| Property and unit | Published value and conditions | Sources and dates |
|---|---|---|
| Manufacturer & exact marketed model name (verify the exact product identity first) | ELEGOO Neptune 3 Pro | |
| Release date (announcement and actual shipping) | Listed on the ELEGOO US store from 11 November 2022 (Shopify publish date) | 1 source
|
| Street price (USD; dated snapshot per entry) | $259.99 on us.elegoo.com, Aug 2026, with the compare-at price also $259.99 - notably more than the newer and far faster Neptune 4 at $219 | 2 sources
|
| Variants & sibling models — and how to tell them apart (spec-contamination risk) | The last Neptune 3 still listed; the 3 Plus and 3 Max are gone from the store's Neptune section. Do not read Neptune 4 figures onto it: the 3 Pro runs Marlin, not Klipper, tops out at 180 mm/s rather than 500, uses a 36-point mesh rather than 121-point, and its nozzle stops at 260 C rather than 300 C. Its machine size, 475 x 445 x 515 mm, is identical to the Neptune 4's, so body dimensions will not tell them apart | 3 sources
|
| Market position: superseded? successor announced? | Superseded by the Neptune 4 series and, in ELEGOO's current marketing, by the Centauri line | 1 source
|
Size, frame & enclosure5 fields
| Property and unit | Published value and conditions | Sources and dates |
|---|---|---|
| Build volume X×Y×Z (mm) — advertised vs actually usable | 225 x 225 x 280 mm; printing platform 235 x 235 mm | |
| Machine footprint (mm) & clearance needed (cable/spool overhang) | 475 x 445 x 515 mm - the same body as the Neptune 4. ELEGOO's maximum size for machine activity is 475 x 580 x 725 mm | 2 sources |
| Net weight (kg) | 8.1 kg net, 10.15 kg gross | |
| Frame construction & material | CNC-machined aluminium extrusion frame (Neptune family) | 1 source
|
| Enclosure: open / enclosed; panel material; door/lid | Open frame, no enclosure |
Motion system3 fields
| Property and unit | Published value and conditions | Sources and dates |
|---|---|---|
| Kinematics (bedslinger i3 / CoreXY / other) | Cartesian i3 bed-slinger | |
| Z-axis: leadscrew count & type, sync mechanism, anti-backlash | Two lead screws | |
| Stepper drivers (exact model e.g. TMC2209; UART/SPI; sensorless homing?) | "Silent Drive (All Axes)"; no driver part number published |
Speed & acceleration2 fields
| Property and unit | Published value and conditions | Sources and dates |
|---|---|---|
| Max print speed (claimed, mm/s) | 30-180 mm/s, with 60 mm/s given by ELEGOO as the recommended speed - a pre-Klipper machine, and the slowest in this file apart from the OrangeStorm Giga | |
| Recommended/typical print speed | 60 mm/s recommended printing speed (manufacturer figure) |
Printing system
Extrusion, heating, leveling and material handling.
Extruder1 field
| Property and unit | Published value and conditions | Sources and dates |
|---|---|---|
| Type (direct drive / bowden) & design name | Dual-gear direct extruder with 2 fans |
Stopped extrusion: check the feedstock, fan and PTFE path
ELEGOO’s nozzle-clogging procedure starts with filament size and slicer configuration, then checks the heatbreak fan, gearbox and PTFE installation. These checks help separate a nozzle obstruction from heat creep or an upstream feeding fault.
Applies to: Neptune 3 Pro/Plus/Max are named by the source; the Pro uses its own replacement parts and configuration.
Official troubleshooting Sources & dates
- ELEGOO: Neptune 3 Pro/Plus/Max nozzle unclogging · Checked 2026-10-20
Hotend & nozzle2 fields
| Property and unit | Published value and conditions | Sources and dates |
|---|---|---|
| Hotend design (proprietary/standard; quick-swap mechanism?) | Brass nozzle, 0.4 mm, titanium-alloy heat break | |
| Max nozzle temp claimed AND firmware max temp limit (both values) | 260 C claimed max nozzle temperature - 40 C below the Neptune 4 series | 2 sources |
Build plate & heating2 fields
| Property and unit | Published value and conditions | Sources and dates |
|---|---|---|
| Max bed temp claimed AND firmware limit | 100 C max heated bed temperature at 25 C ambient | |
| Bed surface (material, texture, coating), single/double-sided | PEI spring steel sheet |
Leveling & Z-offset1 field
| Property and unit | Published value and conditions | Sources and dates |
|---|---|---|
| Auto bed leveling: probe technology (inductive / strain gauge / load cell / touch probe) | 36-point auto-levelling (the Neptune 4 family moved to 121 points) |
Filament handling1 field
| Property and unit | Published value and conditions | Sources and dates |
|---|---|---|
| Filament runout sensor (type, location) | Filament run-out sensor and power-loss recovery |
Supported materials1 field
| Property and unit | Published value and conditions | Sources and dates |
|---|---|---|
| Officially supported filament list | PLA, TPU, PETG, ABS, ASA - no Nylon, unlike the Neptune 4 family | 2 sources |
Software & workflow
Firmware, controls, connections and calibration.
Electronics & power1 field
| Property and unit | Published value and conditions | Sources and dates |
|---|---|---|
| Total rated power draw | 300 W rated power, 24 V output |
Manufacturer source and matched display/controller updates
ELEGOO publishes firmware and mechanical/electrical files for the Pro. The update instructions pair screen and mainboard versions and require selecting the mainboard file for the exact machine; a shared source tree does not make Pro/Plus/Max binaries interchangeable.
Applies to: Neptune 3 Pro-specific firmware; use the stated compatible display/mainboard pair. This is manufacturer source and stock update documentation.
Manufacturer documentation Sources & dates
- ELEGOO: Neptune 3 Pro open files · Checked 2026-10-20
- ELEGOO support: Neptune 3 Pro/Plus/Max version compatibility · Checked 2026-10-20
Firmware & openness1 field
| Property and unit | Published value and conditions | Sources and dates |
|---|---|---|
| Firmware base & current version (Klipper fork / Marlin fork / proprietary) | Marlin - ELEGOO names the system "Marlin" for the Neptune 3 Pro, against "Klipper" for the whole Neptune 4 family |
Connectivity, display & camera3 fields
| Property and unit | Published value and conditions | Sources and dates |
|---|---|---|
| Display: size, type, touch? | 4.3-inch colour capacitive touch screen | |
| On-device UI capabilities (model preview, per-object controls, etc.) | Colour capacitive touch UI; ElegooSlicer recommended, Orca and Cura supported | |
| WiFi (band/standard), Ethernet, USB ports, SD/flash-drive | TF (microSD) card and USB cable only - no LAN and no Wi-Fi |
Safety, support & testing
Published safeguards, support terms and independent evidence.
Noise & power consumption1 field
| Property and unit | Published value and conditions | Sources and dates |
|---|---|---|
| Noise: claimed dB and independently measured dB (distance/method) | Operating sound published as 48 dB or less - a manufacturer figure with no distance or method stated |
Support & ecosystem1 field
| Property and unit | Published value and conditions | Sources and dates |
|---|---|---|
| Warranty length & support reputation (evidence, not vibes) | 12 months on brand-new machines and parts, but ELEGOO's own table excludes a long list of parts from that: PEI plate / build plate / nozzle kit / PTFE tube / heater / thermistor / hot end / packaging / manual / tools carry no warranty at all, and the extruder, extruder kit and printhead kit get 6 months. Certified pre-owned machines carry no warranty | 1 source
|
Read with context
Sources & notes
How to read this guide
This guide presents the catalog’s sourced record for this exact model. Source dates belong to each reference; a page update does not mean every specification has been rechecked.
Prices are dated listing snapshots, with configuration, regional and sale conditions. They are not current offers. Unknown values remain unfilled.
Firmware, variants and available accessories can change. Read the original reference before making a purchase or planning a process.
Catalog references7 sources
- ELEGOO compare-products page, which embeds the full per-model specification JSON for every Neptune, Centauri and OrangeStorm machine · 2026-08 · vendor
- ELEGOO Neptune 3 Pro Shopify product JSON (price and store publish date) · 2026-08 · vendor
- ELEGOO Neptune 4 Shopify product JSON (variant prices and store publish date) · 2026-08 · vendor
- ELEGOO Neptune 4 product page (Specification table) · 2026-08 · vendor
- ELEGOO US store 3D printers collection (current line-up, Aug 2026) · 2026-08 · vendor
- ELEGOO Neptune 4 Plus product page (full specification table) · 2026-08 · vendor
- ELEGOO Refund & Warranty policy (warranty period table) · 2026-08 · vendor
Ownership research & coverage
Firmware, modifications and troubleshooting links are checked against the model and stated hardware or firmware revision. A creator’s compatibility claim is not a fit test by this site. Official troubleshooting describes a diagnostic route; individual reports do not establish a failure rate.
This review did not verify printable modifications, hardware upgrades for this exact model. That is a research gap, not a claim that none exist.
- ELEGOO: Neptune 3 Pro/Plus/Max nozzle unclogging · Checked 2026-10-20
- ELEGOO: Neptune 3 Pro open files · Checked 2026-10-20
- ELEGOO support: Neptune 3 Pro/Plus/Max version compatibility · Checked 2026-10-20