3D Printing InfoBuild volume
225 x 225 x 265 mm; the PEI platform itself is 235 x 235 mm
Advertised dimensions; check usable space and variants.
Sources & dates
- ELEGOO Neptune 4 product page (Specification table) · 2026-08 · vendor
ELEGOO Neptune 4
Klipper-based i3 bed-slinger with a 225 mm bed, 110 C heatbed and a 500 mm/s claim - the base model of the Neptune 4 family.
Architecture reference
Start here
Explore this printer At a glance
Nozzle temperature
300 C claimed max nozzle temperature
Published limits; hardware and firmware limits may differ.
Sources & dates
- ELEGOO Neptune 4 product page (Specification table) · 2026-08 · vendor
Price snapshot
$219.00 on us.elegoo.com, Aug 2026, against a compare-at price of $249.00; both the Ribbon-Cable and Type-C printhead variants are the same price
Dated listing, not a live offer. Read the configuration and region.
Sources & dates
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 4 (spec table "Product Model: Neptune 4") | 1 source
|
| Release date (announcement and actual shipping) | Listed on the ELEGOO US store from 27 May 2023 (Shopify publish date) | 1 source |
| Street price (USD; dated snapshot per entry) | $219.00 on us.elegoo.com, Aug 2026, against a compare-at price of $249.00; both the Ribbon-Cable and Type-C printhead variants are the same price | 1 source |
| Variants & sibling models — and how to tell them apart (spec-contamination risk) | Two printhead variants of the same machine are sold under one SKU - "Ribbon-Cable Version" and "Type-C Version" - which use different printhead parts. Within the Neptune 4 family the numbers diverge sharply and get mixed up constantly: Neptune 4 is 225 x 225 x 265 mm with a 110 C bed and 20000 mm/s2; the Plus is 320 x 320 x 385 mm with a 100 C bed and 12000 mm/s2; the Max is 420 x 420 x 480 mm with an 85 C bed and only 8000 mm/s2. The Neptune 4 Pro is a separate model again | 4 sources
|
| Market position: superseded? successor announced? | Still listed in ELEGOO's US store Neptune section in Aug 2026 alongside the 4 Pro, 4 Plus and 4 Max, but ELEGOO's current development is on 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 265 mm; the PEI platform itself is 235 x 235 mm | 1 source
|
| Machine footprint (mm) & clearance needed (cable/spool overhang) | 475 x 445 x 515 mm. ELEGOO separately publishes a "maximum size for machine activity" of 475 x 550 x 735 mm including rack and tray - the depth to allow for is 550 mm, not 445 mm | 1 source
|
| Net weight (kg) | 8.3 kg net, 10.6 kg gross | 1 source
|
| Frame construction & material | CNC-machined aluminium extrusion frame | 1 source
|
| Enclosure: open / enclosed; panel material; door/lid | Open frame, no enclosure | 1 source
|
Motion system3 fields
| Property and unit | Published value and conditions | Sources and dates |
|---|---|---|
| Kinematics (bedslinger i3 / CoreXY / other) | Cartesian i3 bed-slinger | 1 source
|
| Z-axis: leadscrew count & type, sync mechanism, anti-backlash | Two lead screws (the Neptune 4 Plus and Max add two tie rods to the same arrangement) | |
| Stepper drivers (exact model e.g. TMC2209; UART/SPI; sensorless homing?) | "Silent Drive (All Axes)" is all ELEGOO publishes; no driver part number is given |
Speed & acceleration3 fields
| Property and unit | Published value and conditions | Sources and dates |
|---|---|---|
| Max print speed (claimed, mm/s) | 500 mm/s max toolhead speed (manufacturer claim); the Neptune 4 Plus page for the same family states a recommended 250 mm/s | 2 sources
|
| Recommended/typical print speed | 250 mm/s recommended printing speed against the 500 mm/s ceiling (ELEGOO's own figure) | |
| Max acceleration (claimed, mm/s²) | 20000 mm/s2 max toolhead acceleration (manufacturer claim) - notably higher than the Plus at 12000 and the Max at 8000, because the moving mass is smaller | 3 sources
|
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 |
Hotend blob: check temperature before removal
ELEGOO’s Neptune 4/4 Pro guide checks whether the displayed hotend temperature is plausible before attempting heated blob removal. A below-zero reading takes a separate thermistor-repair path. After repair, re-level and reset Z offset; inspect first-layer adhesion and unsupported geometry to prevent another detached print.
Applies to: Neptune 4 and Neptune 4 Pro hotend assemblies; this is not the Plus/Max toolhead-removal procedure. Follow the source’s power-off steps during removal.
Official troubleshooting Sources & dates
- ELEGOO Neptune 4/4 Pro: hotend blobs and filament leakage · Checked 2026-10-20
FlowTech hotend alternative
The M3107 kit replaces the Neptune 4 / 4 Pro hotend with a matched heater/thermistor assembly and the FlowTech nozzle system, which permits cold nozzle changes. Follow the kit installation and recalibrate for the installed nozzle and filament.
Applies to: Original Neptune 4/4 Pro; M3107 includes its heater, thermistor and heatsink. Plus/Max use M3108.
Manufacturer documentation Sources & dates
- Micro Swiss: FlowTech for Neptune 4 / 4 Pro · 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, with a copper and titanium-alloy heat break - the Plus and Max use a titanium-alloy heat break only | |
| Max nozzle temp claimed AND firmware max temp limit (both values) | 300 C claimed max nozzle temperature | 1 source
|
Build plate & heating2 fields
| Property and unit | Published value and conditions | Sources and dates |
|---|---|---|
| Max bed temp claimed AND firmware limit | 110 C max heated bed temperature | 1 source
|
| Bed surface (material, texture, coating), single/double-sided | PEI spring steel sheet, now upgraded by ELEGOO to a dual-sided textured PEI + PLA-specific surface |
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) | Manual levelling combined with 121-point auto-levelling; no full-auto calibration on this model |
Cable clamp with lead-screw clearance
This remixed clamp removes a corner close to the Z lead screw, giving the printhead cable support more clearance. The creator supplies the replacement geometry and its supported print orientation.
Applies to: Original Neptune 4/4 Pro cable arrangement. Check clearance and cable slack across the full Z range; not established for the Type-C redesign.
Creator listing Sources & dates
- KKNOPP: Neptune 4/Pro clearance cable clamp · Checked 2026-10-20
Filament handling1 field
| Property and unit | Published value and conditions | Sources and dates |
|---|---|---|
| Filament runout sensor (type, location) | Filament detection fitted; power-loss resume printing supported | 1 source
|
Supported materials1 field
| Property and unit | Published value and conditions | Sources and dates |
|---|---|---|
| Officially supported filament list | PLA, TPU, PETG, ABS, ASA, Nylon | 1 source
|
Software & workflow
Firmware, controls, connections and calibration.
Electronics & power3 fields
| Property and unit | Published value and conditions | Sources and dates |
|---|---|---|
| Mainboard model & MCU (exact chip markings if teardowns exist) | ELEGOO describes it only as a "Klipper High-Speed Quiet Motherboard" - no board model or MCU published | |
| Input voltage (110/220 V, switch or auto) | 115/230 V, 50/60 Hz on the product page; ELEGOO's compare page gives 110-120 / 220-240 VAC 50/60 Hz | 2 sources |
| Total rated power draw | 310 W rated power, 24 V output |
OpenNept4une replacement software stack
OpenNept4une replaces the factory software with an updatable Armbian and Klipper stack and supplies printer configurations and calibration tools. Back up the original eMMC image and configuration before following the installation guide.
Applies to: Original Neptune 4; choose its exact board/model image. New Plus+ and Max+ revisions require separate confirmation; stock update packages are not interchangeable.
Maintainer documentation Sources & dates
- OpenNept4une maintainer installation and supported models · 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) | Klipper (ELEGOO names the system "Klipper" outright for the Neptune 4 series, rather than the ELEGOO OS branding used on the Centauri machines) |
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, with Orca and Cura also supported | |
| WiFi (band/standard), Ethernet, USB ports, SD/flash-drive | LAN and USB file transfer; no Wi-Fi is listed for the base Neptune 4, unlike the Plus (USB/LAN/Wi-Fi) and Max (Wi-Fi/USB/WLAN) | 3 sources
|
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 60 dB or less - a manufacturer figure with no distance or method stated, so it is not comparable with an independently measured reading |
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 references8 sources
- ELEGOO Neptune 4 product page (Specification table) · 2026-08 · vendor
- ELEGOO Neptune 4 Shopify product JSON (variant prices and store publish date) · 2026-08 · vendor
- ELEGOO Neptune 4 Plus product page (full specification table) · 2026-08 · vendor
- ELEGOO Neptune 4 Max product page (Specification table) · 2026-08 · vendor
- ELEGOO US store 3D printers collection (current line-up, Aug 2026) · 2026-08 · vendor
- ELEGOO Refund & Warranty policy (warranty period table) · 2026-08 · vendor
- ELEGOO compare-products page, which embeds the full per-model specification JSON for every Neptune, Centauri and OrangeStorm machine · 2026-08 · vendor
- ELEGOO Centauri Carbon product page (full specification 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.
- OpenNept4une maintainer installation and supported models · Checked 2026-10-20
- KKNOPP: Neptune 4/Pro clearance cable clamp · Checked 2026-10-20
- Micro Swiss: FlowTech for Neptune 4 / 4 Pro · Checked 2026-10-20
- ELEGOO Neptune 4/4 Pro: hotend blobs and filament leakage · Checked 2026-10-20