Alfawise U20

The Alfawise U20 is an FDM 3D printer from Alfawise with a 300 x 300 x 400 mm build volume.

Calibration

• Confirm the printer’s mechanical baseline before any extrusion calibration.

Start by assembling or inspecting the frame so every gantry extrusion, corner bracket, and fastener is tight and square, because the U20 is a large-format bed-slinger and the bed mass amplifies any looseness in the structure.

Action: Power off the printer, move the bed by hand through its travel, and verify that the motion feels smooth and uniform with no binding.

Common defects

• No documented auto bed leveling, which increases first-layer risk on a large bed.

Symptom: One side of the print sticks well while the opposite side fails, or the first layer is perfect in the center but uneven at the corners.

Cause: The provided compatibility data lists no probing tool / auto bed leveling, so the printer depends on manual calibration and a sufficiently flat surface.