3D printers · Elegoo
The Neptune 4 is one owner's usual machine for making parts, with PETG the budget-friendly material that works best, and another values that flashing OpenNept4une firmware opens it up for tweaking later.
One newer owner likes that the Neptune 4 is not open source out of the box but can be flashed with OpenNept4une firmware to become open source, which leaves room to tweak and upgrade it as they learn. This rests on a single account, so it is too few to call clear praise.
On print quality, owners are divided, and there are too few accounts to judge. One owner points out that any FDM printer leaves layer lines and surface flaws that need body filler on finished parts. The other owner's best print came from a different machine (an Anycubic Kobra 3 V2) rather than the Neptune 4.
The Elegoo Neptune 4 is a desktop 3D printer that builds objects layer by layer from melted plastic filament. It is a lower-cost, mid-sized printer for hobbyists and beginners who want fast printing and simple setup at home.
| Build volume | 225 x 225 x 265 mm |
|---|---|
| Printer type | FDM |
| Max speed | 500 mm/s |
| Nozzle temperature | 300 °C max |
| Bed temperature | 110 °C max |
| Enclosure | |
| Auto bed levelling | Yes, 121 points (11 x 11) |
| Warranty | 12 months (machine parts; consumables excluded) |
From the maker's spec page, checked October 10, 2026. A blank row means the maker does not state it.
The largest single item it can print is about 22 cm wide, 22 cm deep and 26 cm tall, which is enough for most toys, tools and household parts. Elegoo lists 500 mm/s as its top speed, but everyday prints usually run slower when you want them to look good. With a 300 °C nozzle and a 110 °C bed, it can print common plastics like PLA and PETG, and also tougher ones like ABS, ASA and nylon. It checks the bed at 121 points before printing, so you rarely need to level it by hand.
Pick up to three. You get a page with just those, side by side, on the subjects owners raised.
For one owner, a regular Neptune 4 is the printer they normally use to make parts. Money is a factor for them, and PETG has given the best results. Another owner, still new to 3D printing, chose it partly because the firmware can be swapped for an open source version once they want more control.
The adjustments owners mention are about finishing, not the machine itself. Parts and plugs come off with layer lines and small imperfections, so one owner fills and smooths them with Bondo afterwards. One account mentions an enclosure with mixed feelings, but the comment cuts off before saying what worked and what did not.
The accounts tagged for z-axis reliability, printer upgrading and Neptune 4 Max consistency all come from one comment. That comment mostly describes rebuilding a different printer, an Ender 3: chasing down problems until none were left and moving the electronics into an enclosure that can be heated for ASA and PC. It says little about how the Neptune 4 itself holds up.
Long-term accounts of the Neptune 4 are thin. Nothing in this sample describes it breaking, wearing out or needing repairs over time, and nothing confirms that it doesn't. Until more owners report back after extended use, durability is an open question.
From 0 owner accounts that said how long they have had it. Own one? Add how long yours has lasted.
Nothing with a clear majority yet. Owners who raised these subjects were split, or too few to judge.
Nothing has a clear majority against it yet. Counted from the owners who raised each subject, not from everyone. A subject is judged once at least 4 owners raise it.
8 more subjects came up from fewer than 4 owners each, which is not enough for a fair reading. To see how it stacks up, compare it with another machine.
The same owner, asked again at each point. Fills in as owners answer.
Two questions: how long you have had it, and anything you would like to say about it. Then we ask again as it ages. This helps our mission.
More in 3d printers: Creality Hi, Bambu Lab X1C, Prusa Mk3.
Among the 0 owner accounts here that gave a duration, 0 described a failure.
Before you buy one used, ask the seller: how old it is, whether it was ever repaired and by whom, and whether any of the parts above have been replaced. Ask to see it run. A receipt tells you the warranty start date; most makers honour the term only for the first owner.
Public discussions we read and summarised in our own words. Nothing here was submitted to Still Kicks.
Counted from public accounts by people who said they own it, and summarised by Still Kicks in its own words. Not a manufacturer claim, a lab test or an estimate.
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