3D printer

1. General principles

1.1. Modeling

1.2. Printing

1.3. Finishing

2. Applications

2.1. manufacturing

2.1.1. food

2.1.2. Research

2.2. industrial

2.2.1. Apparel

2.2.2. Firearms

2.2.3. Medical

2.2.4. Vehicle

2.3. Sociocultural

2.3.1. Art

2.3.2. Environmental

3. Advantages

3.1. portable

3.2. less by-product

3.3. shorter manufacturing time

3.4. unlimited design space

3.5. mamufacturing without skills

3.6. Mass customization

4. Disadvantages

4.1. security issue

4.2. material restrictions

4.3. intellectual property protection

4.4. ethical challenges

4.5. spending commitments