Anet ET4 Pro

The Anet ET4 Pro is an FDM 3D printer from Anet with a 220 x 220 x 250 mm build volume.

Calibration

• Establish a mechanical baseline before touching software offsets.

Action: Power the ET4 Pro off, then check the entire motion stack manually: verify that the X gantry is square to the vertical uprights, the bed carriage moves smoothly without wobble, the Z axis rises evenly, and all belts are tensioned evenly but not over-tightened. Inspect the top-mounted spool path so the filament can unspool without dragging sideways, and confirm the glass bed is seated flat and clean.

Common defects

• Capacitive auto-leveling can be sensitive to surface conditions and setup quality.

Symptoms: First layers may be inconsistent from center to edge, or the machine may appear to probe correctly but still produce poor bed adhesion in specific zones.

Causes: The probe can only compensate within limits. If the bed is mechanically skewed, the glass plate is dirty, or Z-offset is not tuned correctly, the auto-level mesh does not fully solve the problem.