3D PRINTING（Additive Manufacturing Technologies）

1. Disadvantages

1.1. Production of dangerous item

1.2. Violation of copyright

1.3. Limited size

1.4. Cost of setting up a 3D printer is very high

1.5. Job loss

2. Advantages

2.1. allow fast production

2.2. reduce time and cost in product design

2.2.1. can produce one prototype for error detection easily, hence reduce risk of recalling massive substandard products

2.3. enable more complex design

2.3.1. Once the design is drawn, it can be printed easily

2.4. create accurate and consistent product

2.4.1. technology is more reliable than human

2.5. allow personalized or customized product making (e.g. for medical use)

2.5.1. offer the user the freedom to personalize anything without extra cost

3. How it works？

3.1. 1 Receive G-code

3.2. 2 Draw 2D

3.3. 3 Stacking and piling the 2D into 3D

4. Application

4.1. Architecture

4.2. manufacturing

4.3. Medical

4.3.1. Artificial organ

4.4. Education

4.5. Fashion & Design

4.6. Aerospace

4.6.1. Rocket engine injector

5. Types

5.1. FDM（Fused Deposition Modeling) majority used

5.1.1. how: Compress orderly and form by stacking

5.1.2. using PLA material

5.2. DLP (Digital Light Processing)

5.2.1. how: use projector with high brightness to consolidate

5.2.2. more detailed therefore widely used in jewelry or product innovation

5.3. SLS (Selective Laser Sintering)

5.3.1. material: Gold,silver,bronze