The Pandoro effect is a truncated-cone distortion in tomographic volumetric additive manufacturing caused by vertical oxygen gradients from thermal hysteresis during resin preparation, mitigated by interface removal, atmosphere control, and a differentiable ray-optical photochemical model.
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Experiments show small changes in voxel water dosage cause large, directionally biased geometric deviations like edge rounding and swelling in printed concrete, which can be reduced by pre-adjusting the digital CAD model.
Angle-based nozzle optimization captures most pressure-loss reductions in FDM extrusion; spline parametrization adds only marginal gains at the cost of manufacturability.
citing papers explorer
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Too Big, Too Small, Too $O_2$: The Pandoro Effect from Oxygen Gradients in Tomographic Volumetric Additive Manufacturing
The Pandoro effect is a truncated-cone distortion in tomographic volumetric additive manufacturing caused by vertical oxygen gradients from thermal hysteresis during resin preparation, mitigated by interface removal, atmosphere control, and a differentiable ray-optical photochemical model.
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Quantifying water-driven geometric uncertainties in powder bed concrete printing using high-resolution 3D modeling
Experiments show small changes in voxel water dosage cause large, directionally biased geometric deviations like edge rounding and swelling in printed concrete, which can be reduced by pre-adjusting the digital CAD model.
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Numerical Optimization of Planar Nozzle Shapes for Fused Deposition Modeling
Angle-based nozzle optimization captures most pressure-loss reductions in FDM extrusion; spline parametrization adds only marginal gains at the cost of manufacturability.