Elegoo Neptune 3 Pro

The Elegoo Neptune 3 Pro is an open-frame bed-slinger FDM printer with a direct drive extruder and auto bed leveling. Released in 2022, it targets beginners and anyone who wants a predictable workhorse instead of a tuning project: it ships 90% assembled and prints within half an hour of unboxing.

Build volume is 225×225×280 mm, the nozzle reaches 260 °C, and the 250 W bed hits 100 °C in a couple of minutes. The extruder is a dual-gear direct drive with a 3:1 reduction ratio, the Z axis runs on two synchronized lead screws, and the power supply sits under the base. Auto leveling probes 36 points with an inductive sensor. Rated top speed is 180 mm/s; the stock profile is tuned for 60 mm/s.

Pros

• Box to first print in about 30 minutes: 90% pre-assembled, every wire labeled, assembly video on the bundled card (Tom's Hardware)
• 36-point auto leveling nails it on the first try — reviewers never re-leveled the bed, and the only manual step is the Z-offset (3DWithUs)
• The direct drive really handles TPU: a bottomless vase at 0.64 mm line width and 50 mm/s printed with almost no stringing (Tom's Hardware)
• The bed heats evenly — under 1 °C spread across 25 measured points with an IR thermometer (3DSpec)
• The flexible PEI sheet grips PETG without glue stick and lets go once cool, so no scraper needed (Tom's Hardware)
• Linear Advance ships enabled in stock firmware, and the Ender 3-adjacent mechanics make spares and mods easy to find (K3D)

Cons

• The fan in the base never stops, even when the printer sits idle — owners describe a constant drone and unplug the machine to silence it (DIY Machines, owner comments on 3DSpec)
• Power-loss recovery is unreliable: in testing the printer rebooted and forgot the job (DIY Machines)
• It's slow by current standards: reviewers printed at 50–65 mm/s, and there's no Input Shaper or Pressure Advance in stock firmware (Tom's Hardware)
• The hotend isn't all-metal: despite the titanium heatbreak there's PTFE inside and a hard 260 °C ceiling, so ABS and polycarbonate are out (Tom's Hardware)

It fits a first-time owner who doesn't want to start with manual bed leveling, and an experienced user after a second machine for PLA, PETG and TPU. For ABS and polycarbonate the open frame and 260 °C nozzle come up short, and real speed means moving to Klipper.

Bottom line: an unhurried but dependable bed-slinger that prints cleanly right after assembly. No modern speed here — and no evenings lost to calibration either.

Reviews

• Tom's Hardware — Elegoo Neptune 3 Pro Review: Upgraded Features Without the Upgraded Price
• 3DWithUs — Elegoo Neptune 3 Pro Review: 3D Printer Testing (4.5/5)
• DIY Machines — Elegoo Neptune 3 Pro Review