For a first step into 9K resin
Elegoo Mars 4
An MSLA resin printer with a 7-inch 9K mono screen, a 153.36 × 77.76 × 175 mm build volume, and XY accuracy advertised at 18 µm per Elegoo.
Documentary analysis · Not personally tested
Specification sources reviewed 2026-09-12. These are manufacturer claims, not measurements by Find My 3D Printer.
Why consider it?
A 7-inch 9K mono screen at 8520 × 4320 pixels, a COB light source with 36 LEDs, XY accuracy advertised at 18 µm, and a speed advertised up to 70 mm/h per Elegoo.
What to verify
The build volume stays compact (153.36 × 77.76 × 175 mm), so larger parts need splitting or a bigger printer. Exact bundle contents should be checked on the retailer's listing.
The specifications that matter
- Process
- Resin
- Nominal build volume
- 153.36 × 77.76 × 175 mm
- Enclosure
- Protective cover, not a thermal chamber
- Multicolor
- One resin at a time; no automatic color or material switching.
- Materials
- Compatible 405 nm UV resins for MSLA, each with its own profile per Elegoo, with a built-in air purifier to cut odor.
Allow room for supports and the chosen orientation. Confirm the exact nozzle, feeder, included accessories and installation clearance against the manual and seller’s listing.
Which projects is it for?
The Mars 4 targets beginners and creators who want 9K resolution in a compact footprint, with a 153.36 × 77.76 × 175 mm build volume per Elegoo, suited to detailed miniatures, game pieces, small prototypes, and tabletop terrain.
The advertised speed of up to 70 mm/h stays modest compared with newer tilt-release models, but fits regular hobbyist use rather than high-volume production runs.
Materials and setup
The 7-inch 9K mono screen at 8520 × 4320 pixels, paired with a 36-LED COB light source, targets XY accuracy advertised at 18 µm per Elegoo, with fan and copper-tube heat dissipation designed to extend the LCD screen's service life over repeated print sessions.
The laser-engraved build plate improves part adhesion during printing and makes removal easier per Elegoo, a useful detail when working with more brittle resins.
What the bundle includes or not
Elegoo advertises an upgraded built-in air purifier and the Voxeldance Tango slicer with static and dynamic (smooth and high-speed) print modes. Exact accessories included (starter resin, tools) should be checked on the retailer's listing.
The GOO file format stays open-sourced and compatible with third-party slicing software per Elegoo, leaving the slicer choice open instead of locking users into Voxeldance Tango alone.
Alternatives to compare
For a larger plate with a similar resolution, the Saturn 3 Ultra steps up to 218.88 × 122.88 × 260 mm per Elegoo. For a newer model from the same manufacturer, the Mars 5 is worth comparing.
The resin printer buying guide helps compare the Mars 4 against other 9K printers based on budget and the volume you need.
Sources and limits
We have not measured noise, real printing speed, accuracy or reliability. Manufacturer images do not establish the contents of the selected bundle.