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

2. Recap: Our Task  Utilize 3D CAD software (Solidworks) and 3D printing  Explore modern research fields and apply this technique  Settle on a project idea!

3. Gantt Chart

4. Tetrakaidecahedra  14 faces:  6 squares  8 hexagons  Packs to fill space  Many optimal characteristics, possible application for bone replacement

5. Original (Ideal) Plan  Research the ideal metal/material  Construct model as close to scale as possible  Test mechanical properties J. Biomed Res. Mat. 52, 631-638, 2000 BUT…THERE IS A PROBLEM!

6. Problems  Nearly impossible to cast at such a small scale (~ 100 microns)  Impossible to 3DP and cast such intricate structure with a metal J. Biomed Res. Mat. 52, 631-638, 2000

7. New Plan  Theoretical vs actual mechanical properties  Variables:  Strut length  Orientation of structure  Material composition (if casting is possible)  Casting technique  Tetrakaidecahedron vs diamond structure?

8. Progress…  Consulted various professionals in the field  Prof. Lorna Gibson  Prof. Sam Allen  3.042 Instructors  Research in pertinent literature  Available 3DP facilities?  Solidworks!

9. Gantt Chart

10. Solidworks Progress

11. Questions to Answer  Symmetries in the tetrakaidecahedron structure?  Isotropic/anisotropic properties?  What exactly makes this structure so special?