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How to design and print 3D objects
Contributed by: Sadler
  • 1. What does CAD stand for in the context of 3D design?
A) Computer-Aided Design
B) Creative Art Development
C) Complex Assembly Diagram
D) Centralized Automated Drafting
  • 2. Which file format is most commonly used for 3D printing models?
A) MP3
B) DOCX
C) STL
D) JPEG
  • 3. What is 'slicing' in 3D printing?
A) Smoothing the printed object
B) Converting a 3D model into layers for printing
C) Creating the initial 3D model
D) Melting the plastic filament
  • 4. What is 'infill' in 3D printing?
A) The outer shell of a 3D printed object
B) The internal structure of a 3D printed object
C) The type of plastic used
D) The bed adhesion method
  • 5. Which of these materials is NOT commonly used in FDM 3D printing?
A) Resin
B) PLA
C) ABS
D) PETG
  • 6. What is bed adhesion?
A) The speed of the print head
B) How well the first layer sticks to the print bed
C) The temperature of the nozzle
D) The amount of infill used
  • 7. What does FDM stand for in 3D printing?
A) Flexible Design Method
B) Fused Digital Manufacturing
C) Fast Direct Manufacturing
D) Fused Deposition Modeling
  • 8. What is the purpose of 'supports' in 3D printing?
A) To cool the model down
B) To support overhanging parts of the model
C) To increase the print speed
D) To add color to the model
  • 9. Which factor most affects the strength of a 3D printed part?
A) Bed temperature
B) Infill density
C) Nozzle color
D) Print speed
  • 10. What is 'raft' in 3D printing?
A) A type of adhesive
B) A vertical support structure
C) A type of 3D printing material
D) A horizontal support printed under the object
  • 11. What is a common cause of warping in 3D prints?
A) Too much infill
B) Using the wrong nozzle size
C) Printing too slowly
D) Inadequate bed adhesion
  • 12. What does SLA 3D printing use to cure resin?
A) Heat
B) Laser
C) Pressure
D) Air
  • 13. What is the purpose of a 'brim'?
A) To cool down the print
B) To improve bed adhesion
C) To create a smooth top layer
D) To support overhangs
  • 14. Which software is commonly used for slicing 3D models?
A) Cura
B) Photoshop
C) Excel
D) Word
  • 15. What is the unit of measure for layer height?
A) Millimeters
B) Inches
C) Centimeters
D) Feet
  • 16. What is the purpose of 'calibration' in 3D printing?
A) To speed up the printing process
B) To remove supports
C) To ensure accurate printing dimensions
D) To add color to the print
  • 17. What is the typical temperature range for printing PLA?
A) 250-300°C
B) 350-400°C
C) 50-80°C
D) 180-220°C
  • 18. What type of 3D printing creates objects by selectively melting powder?
A) CLIP (Continuous Liquid Interface Production)
B) SLA (Stereolithography)
C) SLS (Selective Laser Sintering)
D) FDM (Fused Deposition Modeling)
  • 19. What is a common issue caused by printing too fast?
A) Stringing
B) Warping
C) Poor layer adhesion
D) Elephant's foot
  • 20. What is 'stringing' in 3D printing?
A) Thin strands of plastic between printed parts
B) A type of support structure
C) A thick layer of plastic on the bottom of the print
D) The sound the printer makes
  • 21. What is a common method to improve bed adhesion?
A) Disabling supports
B) Applying an adhesive like glue or hairspray
C) Decreasing the nozzle temperature
D) Increasing the layer height
  • 22. What is the purpose of 'retraction' settings?
A) To prevent stringing
B) To change the color of the filament
C) To improve bed adhesion
D) To increase print speed
  • 23. What does the term 'overhang' refer to?
A) The height of the print bed.
B) The brand of the 3D printer.
C) A part of the model that extends outward without support directly underneath.
D) The type of filament being used.
  • 24. What is a typical use for a 'skirt'?
A) Creating a decorative border around the print.
B) Priming the extruder and ensuring proper bed adhesion.
C) Supporting overhangs.
D) Removing excess filament.
  • 25. Which CAD program is known for its ease of use and suitability for beginners?
A) Tinkercad
B) SolidWorks
C) AutoCAD
D) CATIA
  • 26. What is a potential consequence of a clogged nozzle?
A) Over-extrusion
B) Improved bed adhesion
C) Perfect prints
D) Under-extrusion
  • 27. What is a benefit of using PETG filament?
A) Perfect bed adhesion every time.
B) Biodegradability.
C) Lower printing temperature than PLA.
D) Higher strength and flexibility compared to PLA.
  • 28. What does 'first layer calibration' typically involve?
A) Adjusting the distance between the nozzle and the print bed.
B) Changing the filament color.
C) Enabling support structures.
D) Setting the print speed.
  • 29. What is a common advantage of printing with a heated bed?
A) Lower filament cost.
B) Elimination of the need for support structures.
C) Reduced warping, especially with materials like ABS.
D) Increased print speed.
  • 30. What is the purpose of setting the 'Z-offset'?
A) Fine-tuning the distance between the nozzle and the build plate.
B) Changing the language of the printer.
C) Controlling the filament flow rate.
D) Adjusting the X and Y axis movement.
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