3D Printing True or False Quiz

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Questions and Answers

Vertical holes in a print are generally more accurate to size than horizontal holes due to their creation process. What is the reason for this?

Horizontal holes rely on less precise dimensions.

Horizontal holes experience more warping.

Vertical holes are more stable during printing. (correct)

Vertical holes undergo additional curing.

How can the total material cost for a 3D print project be determined?

By estimating labor costs only.

By averaging costs from previous projects.

By multiplying cost per unit by estimated material usage. (correct)

By assessing only the tool costs.

Which feature is commonly found in low-cost SLA printers for curing resin?

Ultraviolet Spectrum lamp

Infrared Spectrum lamp (correct)

Laser engraver

LED curing panel

3D printing eliminates the need for fixtures due to its operational characteristics. What is a reason for this?

It does not rely on traditional tool setups. Signup and view all the answers

What type of intellectual property right protects the shape of a 3D printed object?

Patent Signup and view all the answers

What is the main objective of Just-in-Time (JIT) manufacturing?

To reduce overall inventory costs. Signup and view all the answers

What are potential advantages of 3D printing technology in crisis situations?

Flexibility and speed in production Signup and view all the answers

What is a common reason for a print taking longer than the time estimated by slicer software?

Unpredictable energy draw from heating elements Signup and view all the answers

What technology is being advanced by Concordia University in Montreal for building complex objects?

Direct Sound Printing (DSP) Signup and view all the answers

How does an employee's direct hourly wage relate to the overall cost to their employer?

Employer costs include wages plus additional factors. Signup and view all the answers

What does it mean when it is stated that '3D printing avoids the need for fixtures'?

3D printing eliminates the need for additional manufacturing setups. Signup and view all the answers

Which industry has widely adopted SLA 3D printing in recent years?

Dentistry Signup and view all the answers

What is an important factor to consider when estimating costs for custom manufacturing in 3D printing?

Material(s) used Signup and view all the answers

What is a significant limitation of photogrammetry as a 3D scanning method?

The scans produced are not photorealistic. Signup and view all the answers

Which factor does NOT influence the estimated costs for custom manufacturing in 3D printing?

Market demand for the product Signup and view all the answers

What is the main application of motion capture (mocap) technology?

Character animation in films and games Signup and view all the answers

What is the print temperature for PLA?

210°C Signup and view all the answers

Which of the following filaments is known for its biodegradability?

PLA Signup and view all the answers

What is the primary function of a heated extruder in 3D printing?

To melt the filament Signup and view all the answers

Which type of extruder is ideal for printing flexible filaments?

Direct drive extruder Signup and view all the answers

What is the purpose of a heated bed in 3D printing?

To prevent warping and improve adhesion Signup and view all the answers

Which of the following technologies uses a laser to cure a liquid resin layer by layer?

SLA Signup and view all the answers

Which filament is commonly used for creating prototypes and products that require flexibility?

TPE Signup and view all the answers

Which of the following terms refers to a 3D model file format used in 3D printing?

STL Signup and view all the answers

What advancement does 3D printing provide regarding fixtures?

It doesn't require additional tools or setups. Signup and view all the answers

Which statement accurately describes SLM (Selective Laser Melting)?

A laser is used to fuse powder into layers of solid material. Signup and view all the answers

What is the function of G-code in 3D printing?

It controls the movement of 3D printing machinery. Signup and view all the answers

Which of the following accurately describes the properties of thermoplastics?

They become moldable at elevated temperatures. Signup and view all the answers

In the context of 3D printing, what does 'slicing' refer to?

The act of dividing a model into layers for printing. Signup and view all the answers

What is the role of Isopropyl Alcohol in the 3D printing process?

It cleans the print bed prior to printing. Signup and view all the answers

Which statement correctly defines the term 'bridging' in 3D printing?

It is the process of printing between two supports. Signup and view all the answers

What does the term 'hydroscopic' refer to regarding filament?

It signifies the filament absorbs water from the atmosphere. Signup and view all the answers

Which 3D printing technology uses a laser to selectively sinter powder material?

SLS Signup and view all the answers

What is the typical filament size used in 3D printing?

1.75 mm Signup and view all the answers

Which of the following materials is commonly used for 3D printing supports that dissolve in water?

PVA Signup and view all the answers

What is the primary function of the extruder in a 3D printer?

To push the filament through the hot end Signup and view all the answers

What is the purpose of sanding in post-processing 3D prints?

To remove layer lines and imperfections Signup and view all the answers

Which of the following is a common defect seen during 3D printing?

All of the above Signup and view all the answers

What does the term 'gantry' refer to in the context of 3D printing?

The frame structure supporting the printer head Signup and view all the answers

Which one of the following is NOT a common advantage of FDM 3D printing?

Limited to simple shapes Signup and view all the answers

Which option describes what a 'manifold' means in 3D printing?

An object where every triangle edge is shared by two and only two triangles Signup and view all the answers

What is a common method to reduce stringing in 3D printing?

Increase the print speed Signup and view all the answers

What function does the 'drive gear' perform in a 3D printer?

To grab the filament and push it through the hot end Signup and view all the answers

What does 'post-processing' mean in the context of 3D printing?

Things you can do after the print comes off the platform Signup and view all the answers

What is referred to as the 'build platform' in 3D printing?

The flat surface where the print is built Signup and view all the answers

What distinguishes a 'bowden extruder' from other extruders?

Extruder where the drive gear is separated from the hot end with tubing Signup and view all the answers

Which filament is known for its resistance to heat and impact, as well as being transparent?

PC Signup and view all the answers

What materials are generally used to support an object during 3D printing?

Support structures Signup and view all the answers

What typically occurs during the Peak of Inflated Expectations in technology development?

Numerous success stories emerge alongside failures. Signup and view all the answers

What is a key characteristic of the Trough of Disillusionment stage?

Investment is likely only if providers improve their products. Signup and view all the answers

Which of the following areas is NOT mentioned as a current application for 3D printing?

Manufacturing textiles Signup and view all the answers

What describes the Slope of Enlightenment in technology adoption?

Benefits of technology become widely recognized. Signup and view all the answers

What is a significant outcome of the Plateau of Productivity?

Broad market applicability of the technology is evident. Signup and view all the answers

Which statement best captures the essence of 3D printing's impact compared to traditional manufacturing?

3D printing is more accessible and encourages creativity. Signup and view all the answers

In what context does 3D printing improve creative hobbies?

By enabling the rapid production of complex designs. Signup and view all the answers

What is one potential benefit of 3D printing in medical applications?

Faster production of high-quality prosthetics. Signup and view all the answers

What is a significant reason companies are suited for low volume production in digital manufacturing?

They excel in fast turnaround processes. Signup and view all the answers

Which aspect of 3D printing allows for rapid iterations during product development?

Prototyping can use test materials that are cost-effective. Signup and view all the answers

What is a potential impact of transitioning to Additive Manufacturing (AM) in the global manufacturing landscape?

A shift away from wasteful practices in supply chains. Signup and view all the answers

Which statement accurately describes the nature of digital manufacturing?

It comprises various processes suitable for different development stages. Signup and view all the answers

What percentage of global manufacturing is estimated to transition from Subtractive to Additive Manufacturing?

30% Signup and view all the answers

What is a primary benefit of using fillets in a 3D print?

They can enhance both aesthetic quality and printability. Signup and view all the answers

What potential problem may occur if a model is not watertight?

It can become difficult to slice and print the model. Signup and view all the answers

Which statement is true regarding downward facing fillets?

They may need supports to print cleanly. Signup and view all the answers

What is the primary function of a gusset in a 3D print?

To reinforce and strengthen thin features of the model. Signup and view all the answers

What is a common characteristic of chamfers in 3D printing?

They enhance printability and aesthetics, especially for downward facing edges. Signup and view all the answers

What cognitive bias can affect the choice of 3D printing tools?

The inclination to use tools that one is already familiar with. Signup and view all the answers

Which 3D software is known for unifying design, engineering, electronics, and manufacturing?

Autodesk Fusion 360 Signup and view all the answers

What is a significant advantage of using shallow angled chamfers over fillets?

Chamfers often do not require additional supports when printed. Signup and view all the answers

What is a key advantage of using generative design in product development?

It enables a faster and more efficient design process. Signup and view all the answers

Which stage in product design provides a physical model for feedback?

Testing Form, Fit, and Functionality Signup and view all the answers

What is the main purpose of concept models in product design?

To gather feedback and assess market appeal. Signup and view all the answers

What key consideration affects the decision between conventional manufacturing and additive manufacturing?

The anticipated volume and part geometry. Signup and view all the answers

In what scenario is low-volume production most beneficial?

In a niche market requiring specific customization. Signup and view all the answers

What role do 3D CAD models play in the product design process?

They allow analysis before creating a physical product. Signup and view all the answers

Why might a product go 'back to the drawing board' after concept modeling?

Due to lack of internal and external positive feedback. Signup and view all the answers

What is a significant advantage of creating complex shapes in manufacturing?

They can lead to lighter and structurally sound single objects. Signup and view all the answers

What is the primary function of Slic3r in 3D printing?

Slicing 3D models into layers for printing Signup and view all the answers

Which software is specifically designed for slicing SLA, LCD, and DLP 3D printers?

Chitubox Signup and view all the answers

What defines an edge in a 3D model?

A line segment connecting two vertices Signup and view all the answers

Which of the following best describes a face in 3D modeling?

The visible area formed by three or more connected edges Signup and view all the answers

What is the purpose of lithophanes in 3D printing?

To produce detailed, backlit artwork Signup and view all the answers

What type of file does the STL format represent?

3D object file format without inherent scale Signup and view all the answers

Which of the following statements best defines NURBS modeling?

It is a mathematical approach for generating curves and surfaces Signup and view all the answers

Which statement about .OBJ files is accurate?

.OBJ files can include photographic data through texture mapping. Signup and view all the answers

What is the primary function of the extrusion process in 3D modeling?

Creating height from a 2D shape to form a 3D object Signup and view all the answers

What does manifold geometry imply about a 3D object's edges?

Each edge is shared exclusively by two faces Signup and view all the answers

What is a unique feature of the Snowflake machine in 3D printing?

It creates customizable snowflake designs based on user inputs. Signup and view all the answers

In terms of geometry, how is non-manifold geometry best characterized?

More than two faces sharing the same edge Signup and view all the answers

Which software is a fork of Slic3r and developed by a 3D printer hardware manufacturer?

PrusaSlicer Signup and view all the answers

What is a characteristic of a watertight object in 3D modeling?

It has no holes or gaps in its geometry Signup and view all the answers

What distinguishes Chitubox from other slicing software?

It includes both Basic and Pro versions catering to different user levels. Signup and view all the answers

Which statement accurately represents the term 'primitive' in 3D design?

Foundational shapes like cones, spheres, and cubes Signup and view all the answers

Study Notes

True or False Questions

Vertical holes in 3D prints are generally more accurate than horizontal holes.
The total material cost for a 3D print project is calculated by multiplying the unit cost of the material by the estimated amount of material used.
Most low-cost SLA printers utilize an infrared lamp to cure resin.
3D printing eliminates the need for fixtures because it doesn't require additional tools or setups.

Multiple Choice Questions

Intellectual Property Rights: A patent protects the shape of an object in 3D printing.
Just-in-Time (JIT) Manufacturing: The primary goal of JIT manufacturing is to reduce overall inventory costs.
Concordia University Technology: Concordia University is developing a technology that uses ultrasonic frequencies to create complex objects.

Additional Questions (Page 2)

Employee Costs: Employer costs include the direct hourly wage plus additional costs that vary depending on factors.
3D Printing Consumable Costs: Print heads are an additional consumable cost in some 3D printing processes.
3D Printing Advantages in Crisis: Advantages of 3D printing in crisis situations include improved transportation, faster production, and better communication networks.
Custom Manufacturing Costs (3D Printing): Material costs, distribution of digital goods, capital investment, overhead, and labor are key factors when estimating custom manufacturing costs.

Additional Questions (Page 3)

SLA 3D Printing Industries: SLA 3D printing is widely used in dentistry, jewelry making, and table-top gaming.
3D Printing and Fixtures: 3D printing reduces the need for product designs, fixed labor costs, tools, and equipment maintenance.
Custom Manufacturing Costs (3D printing): Factors to consider for estimating costs include materials, distribution of digital goods, and capital investment.
Photogrammetry Limitations: Photogrammetry has limitations as a 3D scanning method by being incapable of accurately scanning textured objects, lacking a reliable scale for measurements, and requiring expensive equipment.
Motion Capture Technology: Motion capture technology is used for creating realistic animations of human movements.

Additional Questions (Page 4)

Binder Jetting: Binder jetting is a 3D printing technology that spreads a powder layer and deposits a liquid binder.
Selective Laser Melting (SLM): SLM uses powder laid down on a bed, removes excess powder, then a laser creates the shape.
Material Jetting: Material jetting is a 3D printing technology that uses a print head to lay down photopolymer and wax which is then cured by a UV lamp
Cleaning Print Bed: Isopropyl Alcohol is used for cleaning the print bed.
ABS Juice: ABS juice is used to prepare a print bed. It contains Acetone.
Hydroscopic: Hydroscopic refers to a filament's property of absorbing water.
Bridging (3D printing): Bridging is when the printer prints between two supports or anchor points.
CAD: CAD is a method of creating 3D objects in a computer program in electronic file format.
G-code: G-code is a programming language used for controlling automated machine tools in manufacturing.
Thermoplastic: Thermoplastics are polymers that become pliable at a certain temperature and return to a solid state upon cooling
Slicing: Slicing translates a 3D model into individual layers for 3D printing.

Additional Questions (Page 5)

PLA Print Temperature: The print temperature for PLA is 210 °C.
PLA Bed Temperature: The bed temperature for PLA is 50-60 °C.
Extruder Description: An extruder is a device in 3D printers that melts filament and ejects the material.
FDM: Fused Deposition Modeling
Biodegradable Filament: PLA is a bio-degradable filament.

Additional Questions (Page 6)

Heated Bed Purpose: A heated bed in 3D printing prevents warping and improves adhesion to improve the quality of the printed object.
Filament for Flexibility: TPE is a filament known for its flexibility.
Laser-Based 3D Printing: SLA, SLS, and Material Jetting are laser-based techniques.
Support Material: PVA is a support material that can be dissolved in water.
Extruder Function: An extruder's role is to soften and melt the filament then guide filament through the hot end.
High-Strength Filament: Nylon is described as a high-strength, durable, and flexible filament for mechanical parts.
Extruder Types: Bowden extruder, Direct drive extruder, Gantry extruder, and Dual extruder are types of extruders used in 3D printing
3D Model File Format: STL or OBJ are 3D model file formats for 3D printing

Additional Questions (Page 7)

Post-Processing ABS: Smoothing with acetone, sanding, and heat treatment are post-processing methods for ABS.
Laser-Sintered 3D Printing: SLS uses powder materials that are selectively sintered by a laser.
Common 3D Printing Technologies: Examples of common 3D printing technologies include FDM, SLA, SLS, and Binder Jetting.
Common 3D Printing Filaments: Common filament types include PLA, ABS, HIPS, Nylon, and PVA.
Common 3D Printing Defects: Stringing, warping, and under-extrusion are common defects.
FDM Advantages: Low cost, versatility, and rapid prototyping are advantages of FDM.
3D Printing Support Materials: Common 3D printing support materials include PVA and HIPS.

Additional Questions (Page 8 & 9)

Filament Resistance: ASA is a transparent filament that is resistant to heat and impact.
Build Platform: The build platform is the flat surface on which the 3D print is created.
Extruder Components: The bowden is a type of extruder where the drive gear is separated from the hot end using tubing.
Manifold Description: A manifold is an object with triangle edges shared between a two triangles.
String Reduction: Increasing the printing temperature, decreasing retraction settings, and utilizing a larger nozzle can reduce stringing in 3D prints.
Drive Gear Function: The drive gear's purpose is to guide and push the filament through the hot end of the extruder.
Post-Processing: Post-processing involves actions taken after a 3D print is completed, such as smoothing or sanding.
Support Structures (3D printing): Support structures help to hold parts of the object together when printing.

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Description

Test your knowledge about 3D printing concepts with this true or false quiz. Evaluate statements related to manufacturing processes, cost calculations, and technology used in 3D printing. Perfect for students and professionals alike seeking to deepen their understanding of the topic.