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