3d printing

Question 1

steps of product realization?

Answer 1

1. Proof of concept: idea
2. Prototype: simulation of real product on a smaller scale
3. pilot: replica of the product for testing
4. production:

Question 2

3d printing applications?

Answer 2

• rapid prototyping
• hearing aids
• implants
• architecture

Question 3

advantages of 3d printing?

Answer 3

• saves time
• cost effecient
• confidentiallity
• customization

Question 4

3d printing steps?

Answer 4

1. choose 3d printer
2. adjust nozzle (filament material)
3. choose product position
4. choose print settings:quality,shell,infill,material,speed,cooling,support, extrusion
5. program estimate: time, weight, length of filament
6. save as G-code

Question 5

SLA?

Answer 5

stereolithography:

• Generated form liquid form
• liquid and lazers solidifies than put in UV oven for post curing to make sure it completely solidfies
• material used: photosensitve monomer
• applications: jewelary, dental and medical apllications
• for finely detailed products and smooth surface finish

Question 6

SLS?

Answer 6

Selective laser sintering:

• generated from solid form
• solid+lazer⇒melts ⇒molten metal +powder⇒soldifies on powder bed
• needs post curing
• material used: plastic powder, metal powder, metal polymer
• applications: Printed furniture, T-Hawk (micro air vehicles), Prosthetic fairings
• high mechanical property and smooth surface finish products

Question 7

BJ?

Answer 7

Binder jetting:

• generated from solid form
• glue binds powder together
• materials: Sand, Sandstone, gypsum + Binder material + Infiltrant (post curing)
• applications: Sand cast molds & cores, Complex low cost models, Full colour models, Custom metallic parts /tools (sintered in a following process)
• low mechanical properties colourful and large objects
• for prototypes

Question 8

FDM?

Answer 8

Fused deposition modeling:

• generated from solid form
• semi-molten material⇒heated(extrusion)⇒takes shape⇒cools
• first layer needs cooling fan
• applications: High performance prototypes, Customized jigs and fixtures Functional parts (Environmental Control Systems ECS Ducts), Concept design
• surface finish depends on layar thickness