CAD Conference, Reno, June 12, 2009CAD Conference, Reno, June 12, 2009

3D Physical Sketching

Carlo H. Séquin

University of California, Berkeley

A designer for 30 years…A designer for 30 years…

Since 1994: CAD for ArtistsSince 1994: CAD for Artists

How can we use the visualization power offered by computer graphics and by computer-controlled rapid prototyping for the design of geometrical sculptures?

Geometric SculptureGeometric Sculpture

Brent Collins

Many Math Models and SculpturesMany Math Models and Sculptures

CAD tools are still inadequate

for initial, conceptual 3D design !

Recent Project with Prof. McMainsRecent Project with Prof. McMains

Develop a haptic, immersive VR work station for tele-collaborative design across the internet

See in 3D,touch, feel,annotate,modify,share, discuss …

My Initial Design ToolsMy Initial Design Tools

Metal Bands and Paper Strips

Paper Strips Are More FlexiblePaper Strips Are More Flexible

Structrure of Structrure of Hyperbolic HeptagonHyperbolic Heptagon

Study for a Future SculptureStudy for a Future Sculpture

Requires splitpaper strips

A More Complicated ConfigurationA More Complicated Configuration

Just a Twisted Sheet of PaperJust a Twisted Sheet of Paper

Core of a Core of a Boy SurfaceBoy Surface

Pipe CleanersPipe Cleaners

Plastic HosesPlastic Hoses

Plastic Toy PartsPlastic Toy Parts((Knüpferli)Knüpferli)

What I Am Looking For . . .What I Am Looking For . . .

CAD tools for Ideation, Informal Prototyping: Mimick the best of: clay, wire, paper, scotch-tape, styrofoam …

Without the adversity of: messy glue, gravity, strength limits …

Make available pseudo-physical materials that bend as nicely as steel wire, and stretch like a nylon hose, but are strong as titanium, and as transparent as quartz …