1. CAD Conference, Reno, June 12, 2009 3D Physical Sketching Carlo H. Séquin University of California, Berkeley

2. A designer for 30 years…

3. Since 1994: CAD for Artists u How can we use the visualization power offered by computer graphics and by computer-controlled rapid prototyping for the design of geometrical sculptures?

4. Geometric Sculpture Brent Collins

5. Many Math Models and Sculptures CAD tools are still inadequate for initial, conceptual 3D design !

6. Recent 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 …

7. My Initial Design Tools Metal Bands and Paper Strips

8. Paper Strips Are More Flexible

9. Structrure of Hyperbolic Heptagon

10. Study for a Future Sculpture Requires split paper strips

11. A More Complicated Configuration

12. Just a Twisted Sheet of Paper

13. Core of a Boy Surface

14. Pipe Cleaners

15. Plastic Hoses

16. Plastic Toy Parts (Knüpferli)

17. What I Am Looking For... CAD tools for Ideation, Informal Prototyping: l Mimick the best of: clay, wire, paper, scotch-tape, styrofoam … l Without the adversity of: messy glue, gravity, strength limits … l 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 …