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?

<p>It does not rely on traditional tool setups. (A)</p> Signup and view all the answers

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

<p>Patent (B)</p> Signup and view all the answers

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

<p>To reduce overall inventory costs. (A)</p> Signup and view all the answers

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

<p>Flexibility and speed in production (B)</p> Signup and view all the answers

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

<p>Unpredictable energy draw from heating elements (A)</p> Signup and view all the answers

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

<p>Direct Sound Printing (DSP) (A)</p> Signup and view all the answers

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

<p>Employer costs include wages plus additional factors. (A)</p> Signup and view all the answers

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

<p>3D printing eliminates the need for additional manufacturing setups. (A)</p> Signup and view all the answers

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

<p>Dentistry (B)</p> Signup and view all the answers

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

<p>Material(s) used (C)</p> Signup and view all the answers

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

<p>The scans produced are not photorealistic. (D)</p> Signup and view all the answers

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

<p>Market demand for the product (D)</p> Signup and view all the answers

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

<p>Character animation in films and games (C)</p> Signup and view all the answers

What is the print temperature for PLA?

<p>210°C (D)</p> Signup and view all the answers

Which of the following filaments is known for its biodegradability?

<p>PLA (D)</p> Signup and view all the answers

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

<p>To melt the filament (A)</p> Signup and view all the answers

Which type of extruder is ideal for printing flexible filaments?

<p>Direct drive extruder (B)</p> Signup and view all the answers

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

<p>To prevent warping and improve adhesion (D)</p> Signup and view all the answers

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

<p>SLA (C)</p> Signup and view all the answers

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

<p>TPE (B)</p> Signup and view all the answers

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

<p>STL (A)</p> Signup and view all the answers

What advancement does 3D printing provide regarding fixtures?

<p>It doesn't require additional tools or setups. (B)</p> Signup and view all the answers

Which statement accurately describes SLM (Selective Laser Melting)?

<p>A laser is used to fuse powder into layers of solid material. (D)</p> Signup and view all the answers

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

<p>It controls the movement of 3D printing machinery. (B)</p> Signup and view all the answers

Which of the following accurately describes the properties of thermoplastics?

<p>They become moldable at elevated temperatures. (D)</p> Signup and view all the answers

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

<p>The act of dividing a model into layers for printing. (B)</p> Signup and view all the answers

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

<p>It cleans the print bed prior to printing. (D)</p> Signup and view all the answers

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

<p>It is the process of printing between two supports. (A)</p> Signup and view all the answers

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

<p>It signifies the filament absorbs water from the atmosphere. (C)</p> Signup and view all the answers

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

<p>SLS (D)</p> Signup and view all the answers

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

<p>1.75 mm (A)</p> Signup and view all the answers

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

<p>PVA (C)</p> Signup and view all the answers

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

<p>To push the filament through the hot end (A)</p> Signup and view all the answers

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

<p>To remove layer lines and imperfections (A)</p> Signup and view all the answers

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

<p>All of the above (D)</p> Signup and view all the answers

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

<p>The frame structure supporting the printer head (C)</p> Signup and view all the answers

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

<p>Limited to simple shapes (D)</p> Signup and view all the answers

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

<p>An object where every triangle edge is shared by two and only two triangles (B)</p> Signup and view all the answers

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

<p>Increase the print speed (B)</p> Signup and view all the answers

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

<p>To grab the filament and push it through the hot end (C)</p> Signup and view all the answers

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

<p>Things you can do after the print comes off the platform (A)</p> Signup and view all the answers

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

<p>The flat surface where the print is built (B)</p> Signup and view all the answers

What distinguishes a 'bowden extruder' from other extruders?

<p>Extruder where the drive gear is separated from the hot end with tubing (D)</p> Signup and view all the answers

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

<p>PC (D)</p> Signup and view all the answers

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

<p>Support structures (D)</p> Signup and view all the answers

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

<p>Numerous success stories emerge alongside failures. (A)</p> Signup and view all the answers

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

<p>Investment is likely only if providers improve their products. (A)</p> Signup and view all the answers

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

<p>Manufacturing textiles (A)</p> Signup and view all the answers

What describes the Slope of Enlightenment in technology adoption?

<p>Benefits of technology become widely recognized. (D)</p> Signup and view all the answers

What is a significant outcome of the Plateau of Productivity?

<p>Broad market applicability of the technology is evident. (B)</p> Signup and view all the answers

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

<p>3D printing is more accessible and encourages creativity. (B)</p> Signup and view all the answers

In what context does 3D printing improve creative hobbies?

<p>By enabling the rapid production of complex designs. (B)</p> Signup and view all the answers

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

<p>Faster production of high-quality prosthetics. (B)</p> Signup and view all the answers

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

<p>They excel in fast turnaround processes. (C)</p> Signup and view all the answers

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

<p>Prototyping can use test materials that are cost-effective. (C)</p> Signup and view all the answers

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

<p>A shift away from wasteful practices in supply chains. (D)</p> Signup and view all the answers

Which statement accurately describes the nature of digital manufacturing?

<p>It comprises various processes suitable for different development stages. (A)</p> Signup and view all the answers

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

<p>30% (D)</p> Signup and view all the answers

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

<p>They can enhance both aesthetic quality and printability. (D)</p> Signup and view all the answers

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

<p>It can become difficult to slice and print the model. (A)</p> Signup and view all the answers

Which statement is true regarding downward facing fillets?

<p>They may need supports to print cleanly. (D)</p> Signup and view all the answers

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

<p>To reinforce and strengthen thin features of the model. (A)</p> Signup and view all the answers

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

<p>They enhance printability and aesthetics, especially for downward facing edges. (D)</p> Signup and view all the answers

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

<p>The inclination to use tools that one is already familiar with. (B)</p> Signup and view all the answers

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

<p>Autodesk Fusion 360 (B)</p> Signup and view all the answers

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

<p>Chamfers often do not require additional supports when printed. (B)</p> Signup and view all the answers

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

<p>It enables a faster and more efficient design process. (A)</p> Signup and view all the answers

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

<p>Testing Form, Fit, and Functionality (B)</p> Signup and view all the answers

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

<p>To gather feedback and assess market appeal. (A)</p> Signup and view all the answers

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

<p>The anticipated volume and part geometry. (C)</p> Signup and view all the answers

In what scenario is low-volume production most beneficial?

<p>In a niche market requiring specific customization. (C)</p> Signup and view all the answers

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

<p>They allow analysis before creating a physical product. (C)</p> Signup and view all the answers

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

<p>Due to lack of internal and external positive feedback. (A)</p> Signup and view all the answers

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

<p>They can lead to lighter and structurally sound single objects. (C)</p> Signup and view all the answers

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

<p>Slicing 3D models into layers for printing (A)</p> Signup and view all the answers

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

<p>Chitubox (A)</p> Signup and view all the answers

What defines an edge in a 3D model?

<p>A line segment connecting two vertices (A)</p> Signup and view all the answers

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

<p>The visible area formed by three or more connected edges (D)</p> Signup and view all the answers

What is the purpose of lithophanes in 3D printing?

<p>To produce detailed, backlit artwork (C)</p> Signup and view all the answers

What type of file does the STL format represent?

<p>3D object file format without inherent scale (C)</p> Signup and view all the answers

Which of the following statements best defines NURBS modeling?

<p>It is a mathematical approach for generating curves and surfaces (C)</p> Signup and view all the answers

Which statement about .OBJ files is accurate?

<p>.OBJ files can include photographic data through texture mapping. (A)</p> Signup and view all the answers

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

<p>Creating height from a 2D shape to form a 3D object (C)</p> Signup and view all the answers

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

<p>Each edge is shared exclusively by two faces (B)</p> Signup and view all the answers

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

<p>It creates customizable snowflake designs based on user inputs. (D)</p> Signup and view all the answers

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

<p>More than two faces sharing the same edge (B)</p> Signup and view all the answers

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

<p>PrusaSlicer (B)</p> Signup and view all the answers

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

<p>It has no holes or gaps in its geometry (A)</p> Signup and view all the answers

What distinguishes Chitubox from other slicing software?

<p>It includes both Basic and Pro versions catering to different user levels. (A)</p> Signup and view all the answers

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

<p>Foundational shapes like cones, spheres, and cubes (A)</p> Signup and view all the answers

Flashcards

Vertical hole accuracy in 3D printing

Vertical holes in 3D prints tend to be more precise than horizontal holes due to the more stable X and Y movement of the printhead during the printing process.

3D print material cost calculation

The total material cost for a 3D print project is the estimated amount of material (e.g. grams, mL) needed multiplied by the cost per unit of the material used.

SLA printer and curing

Some low-cost Stereolithography (SLA) 3D printers use an infrared lamp to cure the resin used in the printing process.

3D printing and fixtures

3D printing does not eliminate the need for fixtures; proper support structures and securing of objects during printing to ensure accurate results are still essential.

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Intellectual property for 3D object shape

3D object shape ownership is protected by patents, not by copyright.

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Just-in-Time (JIT) manufacturing

JIT manufacturing aims to minimize inventory costs by producing and delivering parts only as needed for assembly.

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Concordia University's ultrasonic 3D printing technology

Concordia University is developing a 3D printing technology that uses ultrasonic frequencies to create objects.

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Employee total cost to employer

An employee's total cost to an employer includes their direct hourly wage plus other related costs, like benefits and taxes.

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Advantages of 3D printing in crises

3D printing offers flexibility and speed in production, reducing reliance on traditional manufacturing methods.

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3D printing cost factors

Key factors in estimating custom 3D printing costs include materials, capital investment, overhead, and labor.

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Reasons for longer 3D print times

3D print times can be longer than estimated due to factors like printer heating, calibration, and material solidification processes.

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SLA 3D Printing Industries

Industries and hobbies that commonly use SLA 3D printing include dentistry, jewelry making, and tabletop gaming.

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Photogrammetry limitations

Photogrammetry, a 3D scanning method, may have limitations like not capturing realistic texture or a reliable scale for measurements.

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Motion Capture (Mocap) use

Motion capture technology, a form of 3D scanning, is primarily used for capturing movement and poses.

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Shipping Costs Components

Shipping costs include additional factors like administrative fees and labor expenses beyond the base delivery cost.

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Binder Jetting

A 3D printing method where a powder layer is spread, and a liquid binder is deposited on it.

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SLM (Selective Laser Melting)

A 3D printing method using a laser to melt powder layer by layer, forming 3D objects.

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Material Jetting

A 3D printing method using a print head to place photopolymer and wax, cured by UV lamp.

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Hydroscopic Filament

A material that absorbs water from the air.

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Bridging

Printing between two support points in 3D printing.

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CAD (Computer-Aided Design)

Using software to create 3D objects digitally.

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G-code

Programming language for controlling automated machines in manufacturing.

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Thermoplastic

A polymer that is pliable at high temps and returns to solid state upon cooling.

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PLA Print Temperature

The ideal temperature for melting PLA filament during 3D printing is typically around 210 degrees Celsius.

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PLA Bed Temperature

A bed temperature of around 60 degrees Celsius is recommended for printing PLA, as it helps with adhesion and reduces warping.

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What does an extruder do?

An extruder is a vital part of a 3D printer that melts the filament and pushes it out through a nozzle to create a print layer.

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FDM stands for...

Fused Deposition Modeling (FDM) is the most common 3D printing technology, where layers of melted plastic are stacked on top of each other.

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Biodegradable Filament

Polylactic Acid (PLA) is a popular 3D printing filament known for its biodegradability, making it a more environmentally friendly choice.

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Why is a heated bed important?

A heated bed in 3D printing helps prevent warping and improve adhesion between the filament and the print surface.

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Flexible Filament

Thermoplastic Elastomer (TPE) is a type of flexible filament commonly used for creating prototypes or products requiring bendability.

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SLA 3D Printing

Stereolithography (SLA) uses a laser to cure liquid resin layer by layer, resulting in high-resolution, detailed prints.

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What are common 3D printing technologies?

Commonly used technologies include Fused Deposition Modeling (FDM), Stereolithography (SLA), Selective Laser Sintering (SLS), Binder Jetting, and Material Jetting.

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What are common filament types?

Common 3D printing filaments are Polylactic Acid (PLA), Acrylonitrile Butadiene Styrene (ABS), High Impact Polystyrene (HIPS), Nylon, and Polyvinyl Alcohol (PVA).

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What are common 3D printing defects?

Common defects include stringing, warping, under-extrusion, over-extrusion, and layer separation.

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What are the advantages of FDM?

FDM 3D printing offers low prototyping costs, a wide variety of material options, rapid prototyping, the ability to print complex geometries, but it has limited resolution.

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What are support materials in 3D printing?

Support materials commonly include PVA, HIPS, and sometimes PLA and Nylon. They are used to hold overhangs and complex structures during printing.

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What are common post-processing methods for 3D prints?

Common post-processing methods include smoothing with acetone, sanding, painting, and heat treatment. Some methods like hydrodipping are less common.

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What is the standard filament size?

The standard filament size used in 3D printing is 1.75 mm or 2.0 mm.

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What is the function of the extruder?

The extruder pushes the filament through the hot end, melting and extruding it onto the print bed.

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RepRap

A concept where 3D printers are designed and built to create parts for other 3D printers, promoting open-source hardware development.

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Nylon Filament

A type of filament used in 3D printing known for its strength, heat resistance, and ability to be transparent.

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Build Platform

The flat surface in a 3D printer where the printed object is created layer by layer.

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Bowden Extruder

A type of extruder where the mechanism that pushes filament is separated from the hot end using tubing.

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Manifold

In 3D printing, a closed shape where every edge of a triangle is shared by exactly two triangles, forming a watertight object.

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Reduce Stringing

Techniques used to minimize thin, unwanted strands of filament that may occur during 3D printing, leading to smoother prints.

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Drive Gear Function

The drive gear in a 3D printer grips the filament and pushes it through the hot end to create the printed object.

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Post-processing

Actions taken after a 3D printing process is completed to refine, clean, or enhance the finished object.

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Hype Cycle Stages

A model describing the stages of technology adoption and the public's perception of it, from initial excitement to mainstream acceptance.

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Peak of Inflated Expectations

The stage where hype surrounding a technology is at its peak, often fueled by early success stories, despite limitations.

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Trough of Disillusionment

A period of skepticism and disappointment as technology struggles to meet expectations, leading to failures and decreased interest.

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Slope of Enlightenment

The stage where technology overcomes its early challenges and starts to deliver real value, gaining wider understanding and adoption.

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Plateau of Productivity

The stage where technology reaches a level of maturity and widespread acceptance, becoming a standard practice and delivering tangible benefits.

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3D Printing Use Cases

The practical applications and industries where 3D printing technology is currently being used to solve problems or create value.

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3D Printing's True Potential

The transformative power of 3D printing goes beyond initial hype and lies in its ability to create individualized solutions and empower individual creators.

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3D Printing's Impact on Industries

The widespread adoption of 3D printing is quietly revolutionizing various industries, bringing innovative solutions and changing traditional manufacturing models.

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Additive Manufacturing (AM)

A type of manufacturing where materials are added layer by layer to create a 3D object. It is the opposite of subtractive manufacturing, where material is removed to shape a product.

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Subtractive Manufacturing (SM)

A type of manufacturing where material is removed from a solid block to create a desired shape. Examples include milling, turning, and drilling.

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Digital Manufacturing

Manufacturing processes that rely heavily on digital technologies, including computer-aided design (CAD), computer-aided manufacturing (CAM), and 3D printing.

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Iterative Development

A process of repeated design, testing, and refinement, where each cycle leads to improvements and adjustments.

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3D Printing Ecosystem

A complete system for designing, producing, and sharing 3D printed objects, encompassing technologies, materials, software, and communities.

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Generative Design

A design process using AI to quickly create multiple design variations for a product based on specific constraints and goals.

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Concept Model

A physical or digital representation of a product in its early stages, used to test design ideas and get feedback.

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Form, Fit, and Function

The key aspects considered in product design: how the product looks (form), how it fits within its intended use (fit), and how well it performs its intended purpose (function).

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3D Printing for Prototypes

Creating prototypes using 3D printing allows for quick and cost-effective testing of design concepts and fit before committing to full-scale production.

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Iteration in Product Design

The process of repeatedly making changes and improvements to a product based on feedback and testing throughout the design cycle.

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Low-Volume Production

Producing a small quantity of a product, typically for niche markets or specialized applications.

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Advantages of 3D Printing

Benefits of 3D printing include creating complex shapes efficiently, reducing waste by using less material, and enabling faster prototyping.

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Lattice Structure

A framework made of interconnected elements, often found in nature, providing strength and lightweight properties.

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What is an edge in 3D modeling?

An edge is a line segment connecting two vertices. It defines the boundary of a face, similar to a line on a drawing.

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What is a face in 3D modeling?

A face is a flat surface formed by connecting several edges. It's the visible part of a 3D model.

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What does NURBS stand for?

NURBS stands for Non-Uniform Rational Basis Spline. It's a mathematical method commonly used to create smooth curves and surfaces in 3D modeling.

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What are primitives in 3D modeling?

Primitives are basic, foundational shapes like cubes, spheres, and cones that are used as building blocks in 3D design.

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What is extrusion in 3D modeling?

Extrusion is the process of taking a 2D shape and extending it into a 3D shape by giving it depth or height.

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What are sketches in 3D modeling?

Sketches are 2D drawings of lines, circles, arcs, points, and splines. They are the foundation for building 3D shapes in most software.

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What is manifold geometry?

Manifold geometry means each edge of a 3D object is shared by only two faces. It's essential for smooth and printable models.

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What is non-manifold geometry?

Non-manifold geometry occurs when an edge is shared by more than two faces, making it difficult to print and potentially creating errors in the model.

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Watertight Model

A 3D model where all surfaces are connected logically and can be printed without errors.

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Fillet

A rounded edge on a 3D object, improving its look and printability.

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Chamfer

A sloped edge on a 3D object, enhancing appearance and printability.

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Gusset

A sloped rib reinforcing thin features or areas prone to stress.

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3D Printing Software

Computer programs used to design and create 3D models for printing.

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Cognitive Bias

The tendency to favor tools familiar or comfortable, potentially limiting exploration of new options.

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Autodesk Fusion 360

A professional software platform that combines design, engineering, electronics, and manufacturing.

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Recommended 3D Printing Software

A suggestion to use Autodesk Fusion 360 for professional 3D printing needs.

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Slic3r

An open-source 3D printing toolkit designed for creating printable files from 3D models.

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PrusaSlicer

A popular 3D printing slicer developed by Prusa Research, known for its reliability and user-friendliness.

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Chitubox

A specialized 3D printing slicer designed for Resin-based 3D printers.

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.STL File

A standard file format for 3D models used in 3D printing. It doesn't store any size information, so you need to set the scale.

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.OBJ File

A 3D file format similar to STL, with the additional ability to include color information and textures.

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FBX Files

A 3D file format commonly used in computer graphics and animation software.

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Lithophane

A thin, translucent artwork that reveals its image when illuminated from behind.

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Parametric 3D File Generators

Software that generates custom 3D models based on specific mathematical descriptions.

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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.

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