norwegian creations @ggdtrd 3d-printing 101

Bridging the Gap between Idea and Creation

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AGENDA• What is 3D-printing?

• Different types

• "In depth" about the most common type

• Alternatives to printing location

• Post-print work

• Demonstration: Going from model to 3D-print

PART 1

3D-PRINTING“If it can be imagined, it can be made”

What is 3D-printing?• Additive process

• Many differerent type of technologies

EXAMPLES

3D-PRINTING: 3 MAIN TECHNOLOGIES• Photopolymerisation: SLA, DLP, 2PP

• $ 5000 +

• Merging of powder layers: SLS, EBM, DMLS

• $ 10000 +

• Material extrusion: FDM

• $ 500 +

PHOTOPOLYMERISATION

PHOTOPOLYMERIZATION

• SLA, DLP, 2PP

• Liquid plastic exposed to ultraviolet light.

• Light convert liquid into solid.

MERGING OF POWDER LAYERS

"Powder printing"• SLS, EBM, DMLS

Powder printing

MATERIAL EXTRUSION

Fusion Deposit Modeling - FDM• Cheapest, most common, and simplest

• Typ. resolution: 0.1mm/Z

• Repraps, Makerbots, Solidoodle+++

FDM - cheap?

Solidoodle 4 - $ 599

FDM - cheap?

Stratsys Fortus 250 MC - $ 54 000

FDM - How does it work?

FDM - MATERIALS• Most common: ABS and PLA

• But there exists alot of other materials for FDM: nylon, “rubber”, etc.

FDM - SIZE AND SPEED

• Common printer size: 20 cm^3

• Larger print - Larger challenges...

• Divide and Conquer

• Does it take long time?

MODELING FOR FDM

MODELING FOR FDM - OVERHANG

MODELING FOR FDM - OVERHANG

MODELING FOR FDM - OVERHANG

MODELING FOR FDM - WALL THICKNESS

MODELING FOR FDM - “FILLETS”• Not a requirement...

• But can be great to handle stress

• And print-direction is important for strength!

“WARP”

MODELING FOR FDM - HOLES

• Usually to small after print

• Drill!

MODELEING FOR FDM - ASSEMBLY

• Glue

• Skrew

• Make mechanical threads

MODELEING FOR FDM - SOFTWARE

• Solid-modeling

• STL most common

• But STL is a surface modeling language: Control it for errors

• “Slicer”

RECAP• 3 most common types

• “Liquid” - SLA

• “Powder” - SLS

• “Thread” - FDM

• FDM - Challenges

• Overhang

• Warp

• Wall thickness

• …

• Road from model to 3D-print

• Usually through the file format STL

• STL is a surface modeling language, but a 3D-print is solid. Interpretation errors?

PART 2

• Alternatives to printing location

• Post-print work

• Demonstration: Going from model to 3D-print

FROM MODEL TO REAL LIFE

FRA MODELL TIL VIRKELIGHET

FRA MODELL TIL VIRKELIGHET

FRA MODELL TIL VIRKELIGHET

FRA MODELL TIL VIRKELIGHET

ORDERING 3D-PRINTING

• Exists many different suppliers

• Typical easy online quoting systems based on volume

• Different printers and different materials

SHAPEWAYS

POST-PRINT WORK

POST-PRINT WITH ABS - ACETONE

POST-PRINT WORK - FILLER

• Less “chemical”

• Fill gaps with filler

• Sanding job…

POST-PRINT WORK - KNIFE AND SANDING PAPER

FAVOURITES

QUESTIONS?

DEMO!

QUIZ!