CoilCAM: Enabling Parametric Design for Clay 3D Printing Through an Action-Oriented Toolpath Programming System

Title of the Paper

CoilCAM: Enabling Parametric Design for Clay 3D Printing Through an Action-Oriented Toolpath Programming System

Paper Information

• Research Area: Digital Fabrication, Ceramics, and Human-Computer Interaction
• Keywords: Digital Fabrication, Computer-Aided Manufacturing, Clay 3D Printing, Craft Design, Human-Computer Interaction, Parametric Design

Research Background and Problem

• Issues or Challenges:
  1. Traditional hand-coiling techniques in pottery integrate design and making, but digital clay 3D printing often relies on CAD design and CAM conversion, losing the material's interactive characteristics.
  2. Current digital pottery design tools primarily translate CAD-based geometric models, limiting material expressiveness and design iteration.
• Significance:
  1. Clay 3D printing offers precision, repeatability, and programmability, but many manual techniques are difficult to digitize.
  2. Combining the creativity of manual pottery with digital tools can enrich the design space of ceramics.
• Research Motivation and Related Work:
  • The authors observed similarities between hand-coiling and CAM toolpath design, proposing an action-oriented design approach.
  • Existing research focuses more on 3D printing with thermoplastic materials, while advancements in clay printing remain limited.
  • Some artists and designers have explored clay 3D printing using programming tools, but there is a lack of dedicated design tools and user-friendly iterative systems.

Solution

• Proposed Method:
  1. CoilCAM: A domain-specific CAM programming system that supports parametric form generation and surface texture design for clay 3D printing.
  2. The system is based on mathematically defined toolpath operations implemented through visual programming.
  3. It adopts an "action-oriented" approach to explore the relationship between manual coiling interactions and digital toolpaths.
• Innovations:
  1. Introduced the "action-oriented" design concept inspired by manual craftsmanship and machine behavior.
  2. Emphasized toolpath-level design operations, bypassing traditional CAD model slicing workflows.
  3. The system can generate diverse non-cylindrical geometries and textures, overcoming limitations of existing clay printing tools.
• Implementation Steps and Key Technologies:
  1. Developed a modular toolpath generator combining linear, sinusoidal, and other function-based operations to define shape parameters.
  2. Used Boolean operations (e.g., union and difference) for path synthesis, enabling complex geometries.
  3. Integrated printer motor control capabilities to support non-continuous paths and real-time texture generation.
  4. Built on the Grasshopper platform, the system generates URScript or GCode toolpaths for clay printers.

Research Outcomes

• Specific Results:
  1. Design Space Generation: Experimental analysis identified design spaces characterized by generative, biomimetic, architectural, and organic aesthetics.
  2. Support for Complex Object Design: CoilCAM was used to design and print a set of functional ceramic objects (e.g., teapots and tea sets) with parametric textures and forms.
  3. Reproduction of Handcrafted Artworks: The system reinterpreted traditional hand-coiling and assembled pottery designs, demonstrating how digital tools can complement manual techniques.
• Advantages Compared to Existing Solutions:
  1. Surpasses conventional CAD design tools by supporting non-cylindrical shapes and complex textures.
  2. Provides action-level design operation abstractions, enabling rapid iteration and direct reflection of material properties.
• Experimental or Evaluation Results:
  • Collaboration with professional ceramic artists revealed both the potential and limitations of digital design in conjunction with manual pottery.
  • CoilCAM supports quick parameter adjustments, producing objects with expressive material characteristics.
  • In the digital reproduction of three handcrafted pieces, the system demonstrated its capability for modular assembly and manual finishing.
• Limitations and Future Directions:
  1. The visual programming language requires users to have a certain level of mathematical abstraction, posing a learning curve for beginners.
  2. The system cannot fully replicate the flexibility of manual pottery, particularly for complex surfaces and modification steps.
  3. Future work could explore integrating real-time interaction, allowing users to adjust designs during the printing process.

This study demonstrates the potential of combining ceramics and digital fabrication, providing a valuable reference for the development of future action-oriented manufacturing systems.