3D Printing

What is the main process involved in 3D printing with a typical filament printer?

• Heating metal sheets to form layers

• Pouring liquid resin into a mold

• Extruding melted plastic layer by layer

• Carving the object from a solid block

Which statement best describes the difference between 3D printing and injection molding?

• 3D printing involves pouring molten material into a mold, while injection molding builds objects layer by layer.

• Injection molding is used for customization, while 3D printing is for mass production.

• 3D printing builds objects layer by layer from a digital design, while injection molding injects molten material into a mold cavity.

• Injection molding is faster than 3D printing due to its digital nature.

Why are heated beds (or build plates) used in filament 3D printers?

• To cool down the printed object

• To prevent warping and improve adhesion

• To increase the speed of printing

• To decrease the cost of materials

Which of the following is NOT a common material for 3D printing?

• PLA (Polylactic Acid) – [Prototyping, Educational Models, Decorative Items, Food Packaging Prototypes]

• ABS (Acrylonitrile Butadiene Styrene) – [Functional Prototypes, Automotive Components, Household Appliances, LEGO Bricks]

• PVC (Polyvinyl Chloride) – [Pipe Fittings, Signage, Prototyping Electrical Enclosures, Fashion Accessories]

• PETG (Polyethylene Terephthalate Glycol) – [Mechanical Parts, Medical Models, Food Containers, Display Cases]

What does the abbreviation "SLA" stand for in 3D printing?

• Solid Layering Apparatus

• Selective Laser Apparatus

• Stereolithography

• Solid Laser Assembly

How are files created to instruct a 3D printer?

• Using 2D drawing software

• By directly programming the printer

• Using 3D modeling software

• By manually inputting commands into the printer

What is the function of a slicer in 3D printing?

• To cut the object after printing

• To convert a 3D model into printable instructions

• To adjust the temperature of the printer

• To add support structures to the object

Which projects are better suited for resin printers compared to FDM printers?

• Large-scale sculptures

• Functional prototypes

• Miniatures and jewelry

• Architectural models

What does the term "Infill" refer to in 3D printing?

• The outer surface of a printed object

• The thickness of each printed layer

• The internal structure of a printed object

• The base layer of a printed object

Is PLA filament considered a sustainable material?

• No, it is derived from non-renewable resources

• Yes, it is biodegradable and made from renewable resources

• No, it is toxic and harmful to the environment

• Yes, it is made from recycled plastic bottles