Pneumatic System Design for Direct Write 3D Printing
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Date
2017
Authors
Holzman, Noah
Francis, Lorraine
Journal Title
Journal ISSN
Volume Title
Publisher
University of Texas at Austin
Abstract
Direct write 3D printing methods are interesting due to the diverse palette of materials available for the process. In this work, a pneumatic system for direct write printing is built using off-the-shelf hardware and synchronized with an open-source firmware for motion control. The time to steady-state pressure of the system is found to be ~150 ms for the range of pressures tested; this delay can lead to defects on the start of a path. Proof of concept is established by printing with a high viscosity, room temperature curing silicone using a 410 µm nozzle and 300 µm layer height. Test prints show a high degree of dimensional accuracy and consistent layer height over 10s of layers.