Mars 4 Ultra

The Mars 4 Ultra is an LCD 3D printer from Elegoo with a 153 x 77 x 165 mm build volume.

Specifications

Printer Type: The Elegoo Mars 4 Ultra is a Masked Stereolithography (MSLA) resin 3D printer, which means specifications like hotends, nozzles, and FDM-style multi-material capabilities do not apply to this machine [1, 2].

Build Volume: The printer features a maximum build volume of 153.36 × 77.76 × 165 mm [1, 3-5].

Bed (Build Plate): It utilizes a laser-engraved build plate designed to enhance model adhesion during the printing process .

Auto-leveling: The Mars 4 Ultra does not feature automatic leveling; instead, it uses a manual 4-point effortless leveling system [3, 4, 9].

Calibration

Bed Leveling

• Step: Remove the resin vat, loosen the build platform fixing screws, and place the provided leveling paper between the build platform and the tempered glass. Press "Move Z axis to zero" on the touchscreen. Once it stops, press the top of the build platform evenly with one hand, tighten the screws, and adjust the Z-axis up or down in 0.1mm increments until you feel slight resistance when pulling the paper. Finally, click "Set Z=0" [1, 2].

Common defects

Here is a comprehensive list of the defects, bugs, weak points, and failures associated with the Elegoo Mars 4 Ultra, based on the provided sources:

Defects, Bugs, and Failures

1. The "1-Minute Print" Slicer Bug

• Symptom: When attempting to print, the machine displays a height of 0.000 mm and an estimated print time of ~1 minute, but the print never actually starts [1, 2].