3D Printing in the Classroom

2 Micromanufacturing Current micromanufacturing methods make relatively flat objects –alignment of layers hard to achieve –process very complex and expensive Flat objects called 2-D or 2.5-D The Challenge: Lack Truly 3-D Microfabrication Methods Example of 2.5D objects The Solution: Microstereo Lithography

3 3-Dimensional Printing Work of Professor Nicholas Fang in nanoscale optical imaging Idea is to mimic a complicated and expensive lab setup in an inexpensive way Use equipment normally found in a school classroom

4 3-Dimensional Printing So, can’t take $ 500,000 machine into classroom – what can students do?

5 In the Classroom Uses materials readily available to teachers –Materials for elevators available at hardware stores Successfully done in several classrooms Appropriate for multiple disciplines

6 3-Dimensional Printing computer with PowerPoint image data projector magnifying glass mirror elevator product (3-d object)

7 Light-Activated Polymer uv light reacts with initiator to create two radicals Radicals each have single free electron +

8 Light Activated Polymer Radical bonds with monomer Now single free electron at end of chain +

9 Light Activated Polymer Repeats until two ends with free electrons interact and bond +

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17 Elevator Design Drawer slide provides smooth movement T-nut and threaded screw controls motion

18 Slicing the 3D Object 3D object are constructed by slices Overlapping between layers is generally required

19 Examples of Objects

20 Examples of Objects

21 Examples of Objects

22 Examples of Objects

23 Examples of Objects

24 Examples of Objects

25 Examples of Objects