Printer model
ELEGOO Neptune 3 Pro, Plus and Max: hotend, nozzles and PTFE
ELEGOO's rules for the Neptune 3 Pro, Plus and Max: MK8 nozzles, a 27 mm all-metal throat, monthly PTFE changes and the Pro's voltage dial.
Also listed as Neptune 3 Plus, Neptune 3 Max
Short answer
ELEGOO says the Neptune 3 Pro, Plus and Max take MK8-type nozzles and have a hotend with embedded PTFE tubing; a replacement all-metal throat must match the original 27 mm length. On frequently used printers ELEGOO says to replace the hotend PTFE tubing at least once a month. The Pro has a voltage dial set by hand; the Plus and Max do not.
Key facts
- Build volume
- Not confirmed
- Motion system
- Not confirmed
- Stock extruder
- Not confirmed
- Stock hotend
- Embedded PTFE tubing; a replacement all-metal throat must match the original 27 mm length[1]ELEGOO's FAQ for the Neptune 3 Pro, Plus and Max. ELEGOO does not recommend carbon-fiber filament, because it quickly wears the PTFE tube and nozzle.
- Nozzle standard
- MK8-type nozzles[1]ELEGOO recommends 0.4 mm or larger nozzles, because smaller ones clog more easily. This covers the Neptune 3 Pro, Plus and Max, not the Neptune 4 series.
- Stock nozzle
- Not confirmed
- Max nozzle temperature
- Not confirmed
- Max bed temperature
- Not confirmed
- Firmware
- ELEGOO stock firmware, which ELEGOO says handles the M600 filament-change command differently from official Marlin[1]A pause at a layer works only with M600, and the printer ignores code after M600 until the filament is changed. We infer no other differences from this.
- Latest listed firmware
- Not confirmed
- Power input
- Neptune 3 Pro: voltage dial set by hand for 110 V supply. Neptune 3 Plus and Max: no manual voltage setting[1]ELEGOO's FAQ statement. Check the dial on your own unit against ELEGOO's manual; we give no switch-setting steps.
- Hardware revisions
- Not confirmed
- Maker maintenance rules
- Replace the hotend PTFE tubing at least once a month on frequently used printers; replace nozzles by degree of wear[1]ELEGOO gives no fixed nozzle interval.
- Documented upgrade kits
- Slice Engineering Neptune 3 upgrade kit (lists the Neptune 3 Pro, Plus and Max)[2]Slice's guide does not list the base Neptune 3. The kit includes a Copperhead silicone boot and a 37.5 mm Capricorn PTFE tube.
- Recall status
- No recall found on 2026-10-08[3]On 2026-10-08 we found the Bambu Lab A1 recall as the only 3D printer recall in CPSC's notices. That is a dated search, not proof that no recall exists.
- Not confirmed
- Not confirmedOur sources for this family were ELEGOO's FAQ and Slice Engineering's kit guide; neither gives these specs.
Watch out for
- A replacement all-metal throat must match the original 27 mm length, per ELEGOO.
- ELEGOO does not recommend carbon-fiber filament on the stock Neptune 3 hotend, because it quickly wears the PTFE tube and nozzle.
- Only the Neptune 3 Pro has a voltage dial set by hand. Check it against ELEGOO's manual before first use; the Plus and Max need no manual setting.
- Slice Engineering's Neptune 3 kit lists the Pro, Plus and Max, not the base Neptune 3.
This record covers the Neptune 3 Pro, Plus and Max because ELEGOO's FAQ states these rules for all three. The voltage dial is the one difference ELEGOO names: the Pro has it, the Plus and Max do not.
Questions
What nozzles fit the Neptune 3 Pro?
ELEGOO says the Neptune 3 Pro, Plus and Max support MK8-type nozzles, and recommends 0.4 mm or larger because smaller nozzles clog more easily.[1]
Can I fit an all-metal throat to a Neptune 3 Pro?
ELEGOO says a replacement all-metal throat must match the original 27 mm length. Slice Engineering's Neptune 3 kit lists the Pro, Plus and Max. See Neptune 3 hotend upgrades.[1][2]
How often should I change the Neptune 3 PTFE tube?
ELEGOO recommends replacing the hotend PTFE tubing at least once a month on frequently used printers. For nozzles it gives no fixed interval and says to judge by wear.[1]