Wanhao Duplicator i3 Plus

The Wanhao Duplicator i3 Plus is an FDM 3D printer from Wanhao with a 200 x 200 x 180 mm build volume.

Specifications

Extruder and Hotend Mechanics

The Wanhao Duplicator i3 Plus utilizes a single direct-drive MK10-style extruder assembly mounted directly to the X-axis carriage. This direct-drive architecture minimizes filament path flexibility, making the printer highly capable of processing elastomeric polymers (TPU/TPE) compared to Bowden setups. The hotend features a brass nozzle with a 0.4 mm orifice diameter, machined with an M7 thread. Inside the thermal barrier (heatbreak), a 2 mm inner diameter PTFE tube (liner) extends all the way down to make physical contact with the rear of the nozzle. This liner limits continuous operation to 240°C–250°C.

Calibration

To achieve high-quality prints with the Wanhao Duplicator i3 Plus, execute the following calibration sequence:

• Z-Axis Lead Screw Alignment Protocol:

Because the dual Z-axis motors can desynchronize, the X-axis gantry frequently tilts.

• Expected result: The X-axis guide rails must be perfectly parallel to the top horizontal steel frame rail.

Common defects

• Hardware defects and mechanical weaknesses
• Heated Bed Wire Strain Relief Failures:
• Symptoms: The heated bed fails to heat, or the printer undergoes spontaneous resets when the bed reaches Y-axis limit positions.
• Cause: The bed wiring lacks a stress-relief bracket. The repetitive bending of the copper cores at the solder joint during Y-axis travel causes the copper wire to fatigue and snap.

What it is used for

Recommended Use-Cases

• Functional Prototyping: Well-suited for printing enclosures, brackets, and jigs using PLA, PETG, and tough PLA blends thanks to the rigid steel frame.
• Elastomeric Printing: The direct-drive extruder handles flexible TPU and TPE filaments with ease, printing high-quality seals and flexible mounts.