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Augmented Materiality · RMIT University · 2025

Tubythm

Sound-to-Space Parametric Fabrication AR Assembly Grasshopper · Kangaroo PETG Tube

Sound frequency as generative logic. Rhythm, amplitude, and interference patterns translated into spatial growth language. Each frequency reinterpreted as structural tension and density — forming tubular systems that appear as if sound waves have solidified in space. The transformation from hearing to seeing. From time to space. Architectural rhythm driven by the physics of sound.

The project explores what happens when the invisible medium of sound becomes the primary design input. Not sound as metaphor, but sound as data — waveforms becoming structural curves, interference patterns becoming voronoi distributions, amplitude becoming material density.

Fabrication used Mixed Reality overlays (HoloLens) to guide the physical assembly of the PETG tube system — holographic cues for cutting, bending, joint spacing, and tolerance verification. Digital precision transferred directly to handcraft.

Elective Augmented Materiality
Igor Pantic
Team Huichun Zhao
Yingyi Tian
Shahriyar Ahmad
Material PETG tubes · 1000mm × 32mm OD · 3mm wall
30+ tubes
Tools Grasshopper · Kangaroo · Rhino Multipipe
Blender · HoloLens MR
Year Semester 2, 2025
Final Tubythm structure

Computational Workflow

Form Finding I Grasshopper point grids on mesh planes · Closest Point component · NURBS curves
Form Finding II Kangaroo StepSolver — physics-based structural optimisation across 10 iterations
Form Finding III–IV Voronoi / Thiessen polygon algorithm → 3D wireframe → Jitter for randomness → NURBS refinement
Skeleton to Pipe Rhino Multipipe from line geometry → mesh output
Mesh Optimisation Blender — mesh cleanup and subdivision for fabrication
AR Assembly HoloLens Mixed Reality — holographic guides for cutting, bending, joint spacing, tolerance QA
Grasshopper form finding workflow
AR-guided assembly with HoloLens

Material Testing

Six materials tested before PETG was selected: Poly tube, White PVC, PEX pipe, thick and thin hose plumbing tube. Fabrication tools: heat gun, warmed sand for controlled bending, nylon fishing line for tension, UPVC connections. Later material explorations added Kombucha leather, straw, and Line-X polyurea paint coating to the palette.

PETG offered the optimal combination of thermal workability, structural rigidity, and translucency — the light transmission through the tubes became a secondary spatial quality, unplanned but integral.

Material testing 01
Material testing 02
PETG tube connection detail
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