3D Product 3D Printing Technologies

Question 1

What does FDM stand for in 3D printing?

Accepted Answer

Fused Deposition Modeling

Answer

FDM (Fused Deposition Modeling) is an additive manufacturing process that extrudes melted thermoplastic filament layer by layer to build a 3D object.

Question 2

What is stereolithography (SLA) 3D printing?

Accepted Answer

A resin-based process that uses UV laser light to cure photopolymer resin layer by layer

Answer

SLA 3D printing uses a UV laser to selectively cure liquid photopolymer resin, producing parts with very high detail and smooth surface finish.

Question 3

What is 'support material' in 3D printing and why is it needed?

Accepted Answer

Temporary structures printed beneath overhanging geometry to prevent collapse during printing

Answer

Support material holds up overhanging features that would otherwise sag or collapse since 3D printing builds layer by layer without instantaneous structural support.

Question 4

What does 'layer resolution' mean in 3D printing?

Accepted Answer

The thickness of each printed layer, which determines vertical detail and surface smoothness

Answer

Layer resolution (layer height) determines how thin each layer is — smaller values produce smoother, more detailed prints but take longer to complete.

Question 5

What is Selective Laser Sintering (SLS) used for in product development?

Accepted Answer

To fuse powdered nylon or other materials with a laser for strong, functional parts without support structures

Answer

SLS uses a laser to sinter powdered material (typically nylon), producing durable, functional parts with complex geometries and no support structures needed.

3D Product Practice Test

3D Product Practice Test

3D Product 3D Printing Technologies