Exploring FDM 3D Printing Basics

What does "FDM" stand for in 3D printing?

• Fused Deposition Modeling

• Fast Design Manufacturing

• Flexible Digital Modeling

• Fabricated Deposition Machine

Answer explanation

In 3D printing, "FDM" stands for Fused Deposition Modeling, a widely used technique where material is melted and extruded to create objects layer by layer.

Which material is most commonly used in FDM 3D printing?

• PLA

• Nylon

• Resin

• Metal

Answer explanation

PLA (Polylactic Acid) is the most commonly used material in FDM 3D printing due to its ease of use, low cost, and biodegradable properties, making it ideal for beginners and a wide range of applications.

What is the main function of the extruder in an FDM 3D printer?

• To melt and deposit filament

• To cool the print

• To move the print bed

• To scan the object

Answer explanation

The main function of the extruder in an FDM 3D printer is to melt and deposit filament. It heats the filament and pushes it through a nozzle to create the desired 3D shape layer by layer.

Which of the following is a common type of FDM 3D printer?

• Cartesian

• Stereolithography

• Selective Laser Sintering

• Inkjet

Answer explanation

The Cartesian printer is a common type of FDM 3D printer, using a three-axis system for movement. In contrast, Stereolithography and Selective Laser Sintering are different 3D printing technologies, while Inkjet is not typically used for FDM.

What is the purpose of bed leveling in FDM 3D printing?

• To ensure the first layer adheres properly

• To increase print speed

• To change filament color

• To cool the print

Answer explanation

Bed leveling is crucial in FDM 3D printing to ensure the first layer adheres properly to the build surface. A well-leveled bed prevents issues like warping and ensures a successful print.

Which part of an FDM printer moves the print head along the X, Y, and Z axes?

• Stepper motors

• Nozzle

• Filament spool

• Print bed

Answer explanation

Stepper motors are responsible for moving the print head along the X, Y, and Z axes in an FDM printer, allowing precise positioning during the printing process.

What is a common post-processing step for FDM prints?

• Removing support structures

• Electroplating

• Laser etching

• Sand casting

Answer explanation

A common post-processing step for FDM prints is removing support structures, which are necessary during printing to support overhangs but need to be taken off afterward for a clean final product.

Which of the following is NOT a typical application of FDM technology?

• Jewelry casting

• Prototyping

• Educational models

• Functional parts

Answer explanation

Jewelry casting is not a typical application of FDM technology, which is primarily used for prototyping, educational models, and functional parts. FDM is not suitable for the precision required in jewelry casting.

What is the function of the heated bed in an FDM printer?

• To help prints adhere and reduce warping

• To melt the filament

• To move the print head

• To cool the print

Answer explanation

The heated bed in an FDM printer helps prints adhere to the surface and reduces warping by maintaining a consistent temperature, which is crucial for successful print quality.

Which of the following is a calibration technique for FDM printers?

• Bed leveling

• UV curing

• Powder spreading

• Laser focusing

Answer explanation

Bed leveling is a crucial calibration technique for FDM printers, ensuring the print bed is at the correct distance from the nozzle for optimal adhesion and print quality. The other options are not relevant to FDM calibration.