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About Project

Architectural models are traditionally expected to be perfect geometric replicas, yet our eyes rarely see the world in orthographic projection. For a recent project involving the Schweizerischer Bankverein and a classical heritage building, we explored a unique design challenge: 3D printing physical models that incorporate a forced perspective effect.

The client provided 3D files where the geometry was intentionally “distorted” to mimic how a human observer sees a building from the street level-tapering slightly as the structure rises and creating a sense of depth and grandeur that a standard scale model often lacks. This perspective effect creates a more “cinematic” and realistic physical presence, allowing stakeholders to experience the architectural impact as if they were standing in front of the real facade.

The production was a true test of material fidelity. Both the modernist bank and the ornate neoclassical structure were printed in full-color sandstone (CJP). This technology was chosen because it prints color directly into the material’s core, layer by layer, with no need for post-painting. The natural, matte finish of the sandstone powder perfectly captures the “stony” essence of the concrete fins on the modernist building and the intricate masonry and domed roof of the heritage palace. The resulting models offer a tactile, high-fidelity experience that highlights the contrast between mid-century minimalism and 19th-century opulence.

Experience the Power of ColorJet Printing at FacFox

At FacFox, we specialize in ColorJet Printing (CJP) to transform your most complex architectural visions into reality. Our sandstone 3D printing service offers 390,000 unique colors, ensuring that every subtle gradient and texture in your digital model is captured with stunning accuracy. Whether you need forced-perspective displays, detailed urban layouts, or historical replicas, we provide a cost-effective, overnight solution that eliminates the need for manual assembly or painting.

Solution

• Step 1: The digital 3D models were meticulously prepared by the client, where a forced perspective effect was integrated into the geometry to simulate a realistic street-level view. The color data was mapped directly onto the surfaces of these models as texture files.
• Step 2: The finalized files were uploaded to the ColorJet Printing (CJP) software, where the structures were sliced into thousands of thin horizontal layers. The orientation of the buildings was optimized within the virtual build chamber to ensure the best possible surface finish for the facades.
• Step 3: A thin layer of high-strength gypsum-based powder was spread across the build platform by a roller. This established the first cross-section of the models’ foundations.
• Step 4: Inkjet print heads were moved across the powder bed, selectively depositing a liquid binding agent and colored ink simultaneously. The powder was both solidified and tinted in a single pass according to the digital color map.
• Step 5: This cycle was repeated-layer by layer-until the full height of the buildings was reached. Throughout the process, the models were completely supported by the surrounding unbound powder, allowing for the creation of delicate features like the rooftop dome and thin vertical fins without the need for additional support structures.
• Step 6: Once the printing was finalized, the models were carefully extracted from the build chamber. The excess loose powder was removed using a specialized vacuum and compressed air to reveal the detailed architectural forms.
• Step 7: The porous sandstone surfaces were then treated with a clear infiltrant (such as cyanoacrylate). This liquid was absorbed into the models to enhance structural strength, deepen the color vibrancy, and provide a durable finish.