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How to use a 3D printer - Exam
Contributed by: Black
  • 1. What file format is most commonly used for 3D printing models?
A) STL
B) PDF
C) JPEG
D) DOCX
  • 2. What does FDM stand for in 3D printing?
A) Fused Deposition Modeling
B) Fused Digital Manufacturing
C) Filament Driven Mechanism
D) Fast Direct Manufacturing
  • 3. What is the purpose of 'slicing' a 3D model?
A) To add color to the model
B) To convert the model into instructions for the printer
C) To smooth the surface of the model
D) To combine multiple models into one
  • 4. What is the typical material used in FDM printing?
A) Powder
B) Filament
C) Liquid
D) Resin
  • 5. What is 'bed adhesion' referring to?
A) How well the first layer sticks to the print bed
B) How quickly the filament melts
C) How accurately the printer moves
D) How strong the finished print is
  • 6. What is 'raft' in 3D printing?
A) A base layer printed to improve bed adhesion
B) A method for printing multiple objects at once
C) A way to cool the print faster
D) A type of support structure
  • 7. What is 'infill' in 3D printing?
A) The material used for support structures
B) The internal structure of the print
C) The outer shell of the print
D) The printing speed
  • 8. What is the main advantage of using a heated bed?
A) Reduces the amount of filament used
B) Makes the print stronger
C) Prevents warping of the print
D) Speeds up the printing process
  • 9. What does 'layer height' refer to?
A) The distance between the nozzle and the print bed
B) The width of the printed lines
C) The thickness of each layer of the print
D) The total height of the print
  • 10. What is the purpose of support structures?
A) To reduce the amount of filament used
B) To add texture to the model
C) To support overhanging parts of the model
D) To cool the print faster
  • 11. What does 'retraction' do in 3D printing?
A) Extrudes more filament
B) Changes the printing speed
C) Adjusts the bed temperature
D) Pulls the filament back to prevent stringing
  • 12. Which of these materials is biodegradable?
A) Nylon
B) ABS
C) PETG
D) PLA
  • 13. What can cause gaps between layers?
A) Warping
B) Overheating
C) Over-extrusion
D) Under-extrusion
  • 14. What is 'stringing' in 3D printing?
A) A layer shift
B) A crack in the print
C) An over-extrusion of material
D) Thin strands of filament between printed parts
  • 15. What is the main advantage of using dual extrusion?
A) Printing with multiple colors or materials
B) Faster printing speeds
C) Easier bed adhesion
D) Higher print resolution
  • 16. What is a common cause of 'elephant's foot' in 3D printing?
A) The infill density is too high.
B) The nozzle is too hot.
C) The first layer is too squished.
D) The cooling fan is not working.
  • 17. What does 'bed leveling' achieve?
A) Calibrating the extruder motor.
B) Ensuring the nozzle is the correct distance from the entire bed surface.
C) Adjusting the printing speed.
D) Heating the bed to the correct temperature.
  • 18. Which of these is a post-processing technique for 3D prints?
A) Sanding
B) Extruding
C) Slicing
D) Homing
  • 19. What is a common cause of 'warping' in 3D prints?
A) Printing too slowly
B) Too much infill
C) Using the wrong type of filament
D) Poor bed adhesion and temperature differences
  • 20. What is the role of G-code in 3D printing?
A) It is a type of filament used in 3D printing.
B) It is a software used for designing 3D models.
C) It is a type of adhesive used to improve bed adhesion.
D) It is a programming language that tells the printer how to move and operate.
  • 21. What type of 3D printing is SLS?
A) StereoLithography Apparatus
B) Selective Laser Sintering
C) Solid Laser Structuring
D) Selective Light Solidification
  • 22. What is the main disadvantage of ABS filament compared to PLA?
A) ABS is more expensive than PLA.
B) ABS requires a heated bed and releases fumes.
C) ABS is more brittle than PLA.
D) ABS is more difficult to paint.
  • 23. What is the purpose of calibrating a 3D printer?
A) To reduce the amount of filament used
B) To change the color of the printed object
C) To ensure accurate and consistent printing results
D) To increase the printing speed
  • 24. What is the purpose of a nozzle?
A) To hold the filament spool
B) To extrude molten filament
C) To cool the print
D) To heat the print bed
  • 25. What is the purpose of the X, Y, and Z axes in a 3D printer?
A) To regulate the speed of the filament extrusion
B) To adjust the layer height
C) To define the printing area and movement of the nozzle
D) To control the temperature of the print bed
  • 26. What is direct drive extruder?
A) The extruder motor is connected to the hot end using a Bowden tube
B) The extruder motor is mounted directly above the hot end
C) The extruder uses compressed air to push the filament
D) The extruder uses a laser to melt the filament
  • 27. What is the purpose of PID tuning?
A) To improve bed adhesion.
B) To stabilize the temperature of the nozzle and bed.
C) To increase the printing speed.
D) To reduce the amount of filament used.
  • 28. What does 'brim' do in 3D printing?
A) Creates support structures
B) Smooths the surface of the print
C) Adds internal supports to the print
D) Adds a single-layer outline around the base of the print
  • 29. Which 3D printing technology uses a laser to cure resin?
A) SLA
B) DLP
C) SLS
D) FDM
  • 30. What software is typically used to control a 3D printer?
A) Word processing software (e.g., Microsoft Word)
B) Image editing software (e.g., Photoshop)
C) CAD software (e.g., AutoCAD)
D) Slicing software (e.g., Cura, PrusaSlicer)
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