3D Printing

Question 1

What is FDM, the material used and name one advantage and disadvantage

Answer 1

• Fused Deposition Modelling where liquid is pushed through a nozzle and solidifies
• Material Extrusion
• Thermoplastics
• ADV: Best surface finish
• DADV: Brittle

Question 2

What is Vat Polymerisation (name two forms as well), the material used and name one advantage and disadvantage

Answer 2

• The use of a vat of photopolymer resin that gets solidified with an ultraviolet light
• SLA (Stereolithography) and DLP (Digital Light Processing)
• Photopolymer resin
• ADV:Smooth surface finish
• DADV:Brittle

Question 3

What is Powder Bed Fusion, Material used and 1 adv and disadv

Answer 3

• A thermal energy source induces fusion between the powder particles to create a solid object
• Thermoplastic Powder
• ADV: Good for functional parts
• DADV: long lead times

Question 4

What is Material Jetting, Material used and 1 adv and Disadv

Answer 4

-The uses of photopolymer resin droplets that harden when exposed to light
-Photopolymer resin
-ADV:Best surface finish, allows for different materials to be printed
DADV: Brittle

Question 5

What is Binder Jetting, Material used and 1 adv and Disadv

Answer 5

-A process where a liquid bonding agent selectively binds
regions of a powder bed
-Sand/Metal Powder
-ADV: Large build volumes
-DADV: Not as good as metal powder bed fusion

Question 6

All 5 types of 3D Printing

Answer 6

1. Fused deposition Modelling
2. Vat polymerization (STL and DLP)
3. Powder Bed Fusion
4. Binder Jetting
5. Material Jetting