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Technical Papers Fast-Forward
:
Extrusion-Based Ceramics Printing with Strictly-Continuous Deposition
Event Type
Technical Papers Fast-Forward
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TimeSunday, 17 November 201918:53 - 18:55
LocationGreat Hall 1&2
DescriptionWe propose a method for integrated tool path planning and support structure generation tailored to the specific constraints of extrusion-based ceramics printing. Existing path generation methods for thermoplastic materials rely on transfer moves to navigate between different print paths in a given layer. However, when printing with clay, these transfer moves can lead to severe artifacts and failure.
As the core of our approach, we guarantee a single continuous deposition path per layer and thus eliminate the problems caused by transfer moves.
To arrive at a tractable formulation, we split global path generation into a sequence of per-layer problems that we solve from top to bottom. In each layer, we detect points that require support, connect support points and model paths, and optimize the shape of the resulting continuous path with respect to length, smoothness, and distance to the model. For each of these subproblems, we propose dedicated solutions that take into account the fabrication constraints imposed by printable clay. We evaluate our method on a set of examples with multiple disconnected components and challenging support requirements. Comparisons to existing path generation methods designed for thermoplastic materials show that continuous deposition is indeed vital for successful clay printing.