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