Introduction of 3D printing
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Transcript of Introduction of 3D printing
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Introduction of 3D Printing
Slide prepared by : Parker Leung
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Tools to ‘create’ physical objects from a virtual 3D model
Additive manufacturing process, widely uses in design and prototyping
What is 3D Printer?
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‘Add’ small materials together to form objects
Can produces difficult shapes Less scraps after manufacturing
Additive manufacturing
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‘Layer by Layer’
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First 3D printer invent in 1984 year, by Chuck Hull (3D Systems Corporation)
Mainly used in industrial prototyping over 20+ years.
History of 3D printing (1)
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In 2005, because patent expired of FDM, Dr. Adrian Bowyer of University of Bath, founded a open source 3D printer project called “Rep-Rap”
The first open source 3D printer – “Darwin” launch on 2007
History of 3D printing (2)
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Fused Deposition Modeling (FDM)
FDM uses a reel of plastic filament and extruding it through a small diameter nozzle and fused together to form objects.
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Stereolithography (SLA)
SLA uses a laser and a set of mirrors to solidify the layer of UV light curable resin.
Since laser beam is narrow enough, output quality is better than FDM.
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Binder jetting / Polymer jetting
Binder jetting uses liquid adhesive to binding the selected polymer powder to form a physical object.
With colour adhesive, it can form colour objects.
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Selective Laser Sintering (SLS)
SLS uses a laser to melt the selected metal / polymer powder and form a physical object.
This method usually uses building metal objects.
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Usually print with plastic filaments, likes: ABS – Strong and last long, bad smell during
printing PLA – Made from corn, bio degradable PVA – Water soluble, uses to print ‘supports’
Nozzle size from 0.25mm up to 0.8mm
Layer thickness from 0.05mm up to 0.4mm
More about FDM technology
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Single vs Multiple hot ends
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Design with less overhang and bridges ( < 45 degree)
FDM Printing technique (1)
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Use ‘support’ structures if necessary
FDM Printing technique (2)
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A ‘ horizontal’ base – use less supports
FDM Printing technique (3)
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From design to fabricate directly
Build on demand
Make Revolution / 3rd Industrial Revolution
Why we need 3D Printing?
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Manufacturing / Building
Bio Medical
Food
Wearable / Jewellery
DIY Design / Makers
Usage of 3D printing
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3D Printed Vehicle
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FDM Print with “Conductive Plastic Filament”
Consist of graphite
Print electronic circuit directlyinside the structure
In future, PCBs (2D circuit) may replaced by 3D circuit
3D Printed Electronics
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Scan real objects,to get “cloud of points”
Link up “cloud of points”to form “faces”
Transform into 3D modeling file
How 3D Scanning works?
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Autodesk 123D Catch(http://www.123dapp.com/catch)
Skanect
Structure.io (with iPad)
DIY David 3D scanner
Different 3D scanning tools