University:
Boston University
Course:
MET CS 201 | Introduction to Programming
Academic year:

2024
Views:

139

Pages:

11
Author:

pubicswprv

3D Printing/ CAD What is 3D Printing? Also known as Additive Manufacturing The creation of solid object by layering material in line with the electronic instructions ● Currently there are many different companies that sell 3D printers commercially ● ● Types of 3D printing ● ● ● ● ● ● FDM- what most people think of, layer by layer SLA- laser beam hardens resin in a vat SLS- similar to SLA, but uses powder SLM- similar to SLS, but uses metals EBM- uses electron beam instead of laser LOM- builds material up and cuts into it Materials ● ● ● ● ● ● ● ● Plastic Engineering plastic Biomaterials Metal Materials Ceramic Materials Gold and Silver Titanium Nylon History of 3D printing ● ● ● Early additive manufacturing equipment and materials were developed in the 1980s. 3D printing is used to create a 3D model from a picture where users can test a design before investing in a larger version. The term 3D printing originally referred to a powder bed process employing standard and custom inkjet print heads, developed at MIT in 1993 and commercialized by Z Corporation. Pros and Cons of 3D Printing Pros ● ● ● Rapid Prototyping ○ Allows for companies to transition design to prototype faster Creates More Jobs ○ Companies have to hire more people to design, maintain, build, and fix the printers Contributes to advancements in Medicine ○ Can 3D print individual organs using the DNA of recipients so there’s no fear of organ rejection Cons ● ● ● There’s material limitations ○ Can only use a certain group of materials Could Possibly Produce Harmful Items ○ There’s little or no oversight which opens the possibility of creating weapons such as knives and guns Potential Copyright issues ○ Makes it easier to create more accurate counterfeit items Applications of 3D printing 3D Printing Organs ○ Uses patients own cells to print a new organ, runs no risk of organ rejection ○ Can 3D print lungs, ears, noses, and more ● 3D printing prosthetics ○ Printed a new prosthetic foot for Buttercup the Duck ● Buttercup’s First Steps With Her Prosthetic Foot Applications continued Helps the automotive industry ○ Can make prototypes of car parts, such as brake rooters and vents ○ Cars have been made using 3D printing technology ■ Urbee 2, Kia Telluride, Strati ○ Ford is using many 3D printing technologies too ● Can also be used for food ○ Chocolate- Hershey’s has a printer for making designs ○ Foodini- 3D prints, except with food ● What is CAD? ● ● CAD (computer-aided design) software is used by architects, engineers, drafters, artists, and others to create precision drawings or technical illustrations. CAD software can be used to create two-dimensional (2-D) drawings or three-dimensional (3-D) models. CAD software is used to increase the productivity of the designer, improve the quality of design, improve communication through documentation. Types of CAD ● ● 2D CAD 2 Dimension CAD - Used in early days of CAD, uses 2D shapes for design 3 Dimension CAD- Creates 3D images can be seen in any direction after introducing planes ○ Wire-Frame- Uses lines and arcs to create a skeleton like model ○ Surface Models- Joins 3D surfaces and making everything in background invisible ○ Solid Models- Similar to Surface model except includes weight, density, and volume, most useful and commonly used 3D CAD Use CAD through Onshape ● ● Demonstration! Onshape is a free CAD software open to the public