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.
|Original language||English (US)|
|Number of pages||5|
|State||Published - 2020|
|Event||28th Annual International Solid Freeform Fabrication Symposium - An Additive Manufacturing Conference, SFF 2017 - Austin, United States|
Duration: Aug 7 2017 → Aug 9 2017
|Conference||28th Annual International Solid Freeform Fabrication Symposium - An Additive Manufacturing Conference, SFF 2017|
|Period||8/7/17 → 8/9/17|