Design Technology · A4 Production

DTA4.1 — Manufacturing techniques

Design Technology · SL / HL · syllabus-mapped notes

1. DTA4.1.1

   The five categories

   Manufacturing techniques can be organized into five categories.

2. DTA4.1.2

   Additive techniques

   An additive technique is the process of creating an object by constructing it one layer at a time and typically refers to 3D printing.

3. DTA4.1.3

   Rapid prototyping from CAD

   Rapid prototyping is the creation of an object based on a computer model developed in a 3D modelling (CAD) program.

4. DTA4.1.4

   Additive manufacturing in industry

   Additive manufacturing is used in various industries for low-volume production runs.

5. DTA4.1.5

   4D printing

   4D printing is an extension of 3D printing, where the physical and chemical state of a 3D printed object changes over time due to external stimuli such as pH, temperature, water and light.

6. DTA4.1.6

   5D additive manufacturing

   5D dimensional additive manufacturing involves the rotation of the extruder head and the print bed in order to print in five different axes.

7. DTA4.1.7

   Subtractive techniques

   Subtractive techniques involve removing material from an initial 3D mass to achieve a desired shape and can also be applied to 2D or flat materials to modify or change the shape.

8. DTA4.1.8

   Forming techniques

   Forming techniques modify the shape of a material without adding or removing any materials.

9. DTA4.1.9

   Joining techniques

   Joining techniques can temporarily or permanently join two or more similar or dissimilar materials together.

10. DTA4.1.10

    Finishing techniques

    Finishing techniques are used to protect and enhance the surface of a component, contributing to its longevity and an overall increase in product life.

11. DTA4.1.11

    Combining the five categories

    A combination of additive, subtractive, forming, joining and finishing techniques are needed to create components and products.