Introduction to 3D-Printing - UniForum Chicagouniforumchicago.org/slides/3Dprint/3D-Printing.pdf ·...
Transcript of Introduction to 3D-Printing - UniForum Chicagouniforumchicago.org/slides/3Dprint/3D-Printing.pdf ·...
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Introduction to 3D-Printing
Peter Fales
Uniforum Chicago
March 28, 2017
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Topics
● Overview of 3D-Printing
– Only a brief overview
– Hobbyist perspective● Technology and Tools
– Concepts and getting started● Demo of creating a new design
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What is 3D-Printing?
● Build arbitrarily shaped 3-Dimensional objects
● Typically used to describe additive methods (the opposite of subtractive methods like a CNC machine)
● Many applications: industrial, medical, artistic, hobbyist, and more
http://www.3dsystems.com
http://www.instructables.com/id/3D-Printing-1/ http://www.instructables.com/id/3D-Printing-1/
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Technologies - FDM
● “Fused Deposition Modeling”
● Most popular with hobbyists due to simplicity, low cost, and wide support
● Proprietary term owned by Stratasys - Equivalent terms used by the community include Fused Filament Fabrication (FFF) and Plastic Jet Printing (PJP)
https://en.wikipedia.org/wiki/3D_printing
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Other Technologies
● Selective Laser Sintering (SLS) – Laser melts “selected” areas in a layer of powder
● Powder Bed and Binder (PBB) - “ink-jet” spreads the layer of powder to correct location
● Stereolithography Apparatus (SLA) – ultraviolet laser hardens each layer in a vat of resin
● More complex/costly industrial methods
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Printers
● Arbitrary Sample – not a complete list
Da Vinci Minixyzprinting.com
$270 Microprintm3d.com
$350
Replicator+makerbot.com
$2,500
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Printers (cont.)
LulzBot Miniprintedsolid.com
$1,250
“RepRap”Open-Source Printer
Price Varies
http://barkengmad.com/tag/cnc-routers/
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Printers (cont.)
ProX SLS 5003dsystems.com
$250,000
XYZ Nobel 1.0 (SLA) xyzprinting.com
$1,500
● ALSO:The Best 3D Printers of 2017http://www.pcmag.com/article2/0,2817,2470038,00.asp
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Common Materials for FDM
● PLA (PolyLactic Acid) – biopolymer, i.e., a biodegradable plastic. made from
renewable raw materials such as cornstarch or sugarcane.
– Inexpensive and easy to use
● ABS (Acrylonitrile-Butadiene Styrene)– An oil-based plastic. Harder and more durable than
PLA. (Think Legos)
– heating, particularly ABS, can release small quantities of harmful VOCs.http://pubs.acs.org/doi/pdf/10.1021/acs.est.5b04983
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On-Line Communities
● Manufacturer Supported:– Thingiverse (Makerbot) - “github” for 3d
designs http://www.thingiverse.com/
– 3Dvia Content Warehouse (3dvia.com) http://www.3dvia.com/search/
– 123D (Autodesk) http://www.123dapp.com/content
– 3D Warehouse (Google) https://3dwarehouse.sketchup.com/index.html
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Printing Services
● Catalog parts or your own design● Variety of technologies and materials● Examples:
– Libraries – Naperville, and ??
– UPS Store – still pretty new
– Shapeways – Gold anyone?
– Ponoko – high end for artists
– 3dhubs.com – Local “service bureaus”
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Design/Creating
● Analogous to Word Processor or Graphics package like Word or Photoshop
● Powerful, feature-rich, but each has its own internal storage format
● Commercial (e.g. Autocad)● Free and/or Open-Source
– Sketchup, Blender, 123D, FreeCAD, NetFabb, TinkerCAD (browser)
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Export STL File
● Analogous to PDF - standard file format supported across many platforms
● Triangular Mesh - must be be "watertight"
https://i.materialise.com/blog/how-to-choose-the-perfect-file-resolution-when-turning-your-3d-model-into-a-3d-print/
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Slicer
● Analogous to printer driver - where do the “pixels” go?
● But there are special cases for 3D:
– Layering
– Infill
– Supports
– Rafts
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Videos
● Time-lapse 3d-print: Detail and infillhttps://www.youtube.com/watch?v=8_vloWVgf0o
● Time-lapse Makerbot Replicatorhttps://www.youtube.com/watch?v=XMil8GVmNYo
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A Few Examples
Replacement piece for board game
Curtain rod valence clip
Raspberry Pi Case Table Saw “cursor”
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Live Design Example
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Live Design Example (Cont.)
● Using FreeCAD on Linux
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Live Design Example (Cont.)
Naperville Library (Makerbot PLA)
Shapeways (SLS Nylon)
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Q & A