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