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