Additive Manufacturing Certification Test Set Questions With Correct Answers

Additive Manufacturing
Certification Test Set Questions
With Correct Answers
- Additive Manufacturing Introduction - Machine Types - Materials
- Model Preparation - File Export Settings - Machine Preparation
- Printing the Part - Post Printing - Part Finishing - Software Options

What are the primary printing methods? - ANSWER ✔ :
1. Fused Deposition Modeling
2. Stereolithography

What are some things that can be printed? - ANSWER ✔
: 1. Plastics
2. Biomaterial - skin cells, organ cells, dissolving implants
3. Metals
4. Food

What is a "subtractive" manufacturing process? -
ANSWER ✔ : When the process removes material from
an existing block of material.

What is an "additive" manufacturing process? - ANSWER
✔ : When the process only uses material to make up the
part geometry.

What are some pros of an additive process? - ANSWER
✔ : 1. Less material is wasted

,2. Cost of manufacturing goes down
3. Part is generated in it's final shape

What are two of the leading manufacturing methods? -
ANSWER ✔ : 1. FDM - Fused Deposition Modeling
2. SLA - Stereolithography

What is another type of additive manufacturing process? -
ANSWER ✔ : A powder-based system

What are the pros/cons to a powder-based system work?
- ANSWER ✔ : - Can make higher quality parts
- Can print metal
- More complex
- Requires additional clean-up and post-processing

What are the cost benefits of FDM printers? - ANSWER
✔ : - Typically the lowest cost machines in initial purchase
and materials
- Hardware isn't as expensive
- Spools of plastic strands used by FDM printers are
widely available and created at a low cost

T/F: Additive manufacturing uses much less material than
many other traditional "subtractive" manufacturing
processes. - ANSWER ✔ : True

Which of the following is typically the cheapest type of 3D
printer to purchase?

,a. Powder-based
b. FDM
c. SLA
d. None of these are correct. - ANSWER ✔ : b. FDM

T/F: SLA printing uses a plastic strand that's pushed
through a heated nozzle in a specific pattern, producing
one layer at a time. - ANSWER ✔ : False

Which of the following is typically the most expensive type
of 3D printer to purchase?

a. Powder-based
b. FDM
c. SLA
d. None of these are correct - ANSWER ✔ : a. Powder-
based

T/F: 3D printing technology is expanding and is now able
to print metal parts. - ANSWER ✔ : True

What does "FDM" stand for? - ANSWER ✔ : Fused
Deposition Modeling

How does FDM work? - ANSWER ✔ : FDM takes a long
strand of plastic and pushes is through a heated nozzle in
a pattern in the shape of the part.

Which part of a FDM printer moves along two axes in a
single plane? - ANSWER ✔ : The nozzle

, How many layers does an FDM printer go at a time? -
ANSWER ✔ : One

How does an FDM printer move on to printing the next
layer of a part? - ANSWER ✔ : The build plate that the
part's printed on moves downward so the next layer can
be printed on top.

How does the build plate move in FDM? - ANSWER ✔ :
The build plate moves vertically in a third axis of motion.

What does SLA stand for? - ANSWER ✔ :
Stereolithography

How does SLA work? - ANSWER ✔ : A laser is
projected into a pool of liquid resin and hardens the resin
at a specific spots which forms the shape of the part layer
by layer.

How is the laser controlled in SLA? - ANSWER ✔ : The
laser is controlled by mirrors that move underneath the
pool of resin.

How dies the build plate move in SLA? - ANSWER ✔ :
The build plate moves upward and downward in a single
axis.

What are FDM and SLA most common for? - ANSWER
✔ : Smaller benchtop models