1. CAD & Rapid Prototyping by 3- Dimensional Printing (3DP TM ) Rapid Toolers: Jordan Medeiros Stephanie Silberstein Hannah Yun

2. Recap: Tetrakaidecahedron

3. What’s the Point? Possible Applications - Structure -

4. Task 1: Verify Theoretical Predictions with Real World Testing and Analysis Theory: “Nearly Isotropic”? Real World Testing

5. Crystallography Highest Ordered Cubic Point Group Symmetries

6. Testing Faces

7. Printing & De-powdering

8. Results:

9. Impregnating with Wax!

10. Symmetries

11. Overall Printing Process

12. Materials Selection

13.  Cyanoacrylate (C5H5NO2) “Z Bond 101” – Moisture Cured Flexural Strength: 17.2 MPa* E ~ 2.7 GPa* * Jim Bredt, ZCorp

14. Task 2: Differentiate Between Which Results are due to the Structure and Which are Due to the Fabrication Process E 1 E 2 E 3

15. Load Cell & Displacement Selection Using Beam Theory:

16. Task 3: Inspect How Properties Change as We approach Strut Length Boundaries Tetrakaidecahedron Property Geometric Parameter

17. Task 3 - Method

18. Software Issues

19. Other Issues: Cost  Cost of Random Aluminum Foam, June 1998 (ERG in Oakland, CA) 24 pieces: 0.8 x 1.6" x 9.4"/Dogbone: $70  How much would it cost to 3DP our structure, factoring in time?

20. Gantt Chart

21. Questions?