WEAVING LOVE PAVILION
Metal 3D-printed Sculpture
The large-scale metal 3D-printed sculpture WEAVING LOVE PAVILION is located in the "Wedding Garden" at the Hong Kong Immigration Department's new Tseung Kwan O headquarters. Measuring 5.3m × 4.8m × 3.8m and weighing over 2,000 kg, this sculpture was fabricated through RONGSU's Wire Arc Additive Manufacturing(WAAM) technology. The design is inspired by the graceful flowing of a bride's veil, featuring 1,312 heart-shaped cutouts that interweave with the couple's two hearts of true love to form 1,314 hearts, symbolizing eternal love through art and romance.
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The sculpture is composed of quasi-quadrilateral mesh-like tubular elements interconnected throughout, resulting in a highly complex geometry. The tubular sections feature large bending angles, and the overall dimensions are substantial, making deformation control during printing particularly challenging. This also places stringent demands on angled deposition and process tuning.
To address these challenges, the structural components were divided into multiple regions for printing based on angular variation and support conditions, followed by assembly and welding using dedicated fixturing. With RONGSU’s in-house developed path slicing software, the printing paths for each region can be precisely planned, and the corresponding process parameters can be carefully optimized.
During fabrication, RONGSU optimized the structural details by conducting process parameter adjustment and testing in two primary areas, ensuring the quality and performance of the sculpture.
First, for near-vertical printing, RONGSU conducted five rounds of process parameter adjustment and optimization to maintain wall thickness within a reasonable range while improving the surface appearance of the printed parts. Second, for large-angle inclined printing, optimization enabled stable continuous printing at 50° angles with consistent layer patterns. By adjusting the printing cross-sections and testing the printed mesh structures, the orientation closely matched the digital model, resolving deformation issues associated with large-volume printed components.tent with the digital model, solving the deformation issues caused by large print volumes.
To ensure the quality of the veil sculpture, the printing process utilized RONGSU's RS-R1 and RS-L2 large-format vertical rail arc additive manufacturing systems with eight-axis coordination. Equipped with self-developed high-precision calibration algorithms for absolute path accuracy, these systems combine large-scale build volume, automation, and high precision, ensuring exceptional quality and timely delivery of the sculpture.
Meanwhile, the RS-R1/L2 systems incorporate multiple sensors for process monitoring: height sensors ensure consistent layer height and penetration depth compensation; infrared temperature sensors maintain proper interlayer temperatures for quality morphology; and a proprietary melt pool camera, shielded from welding glare, provides clear real-time observation of melt pool behavior.
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