Oct.12, 2012

SCI-Arc awarded the inaugural Gehry Prize on Sept. 9 to husband-and-wife team, Kyle and Liz von Hasseln for their "Phantom Geometry" project.

Our project, phantom geometry, is the description an anexact body understood as the bottom-up assembly of its component systems and forms. It is a visual assembly of data representing the multiple states and systems of that body.

The couple developed a giant dual-robot DLP 3D printer to build material form from streaming data. The system uses UV light from a modified DLP projector to continuously and selectively cure resin until the material reification of streaming data emerges.

The main idea here is to build a large, networked object by moving around the shallow soft-silicone vat within the intersecting workspheres of the robots allowing the object to bifurcate, and then merge with other neighboring stalactites.


The second important idea is that the light being transmitted to the DLP is accessible in real-time. We can (and did) modify the geometry as we printed. Also we could and modify the 2D image of the sliced 3D geometry in Touch Deisgner right before we sent it to the projector - it allowed us to control layer thickness on the fly, and add perforations. However, any image manipulation that you can preform would have physical consequences. Very cool possibilities for scripting geometry here.


The layers (3.5mm thick) cured in about 90-180 seconds. It was the fastest speed we could find with the time and money we had for R&D. The speed slowed considerably during the project to 500+ seconds (maybe the bulb was dying?). We chose clear resin partly for aesthetic reasons, and partly to be able to cure thick layers. We found that with clear resin we could cure the 1mm of resin about as quickly as we could cure 3.5mm. Thick layers also meant fewer overall layers that we needed to monitor for adhesion.

(Images credit: Kyle and Liz von Hasseln)


You can find detailed explanation about the technology, the resin, the robot/software interface, software and the workflow here.


Source: Shapeways


Posted in 3D Printers



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