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3D Printing

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by

Jan Northoff

on 16 September 2014

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Transcript of 3D Printing

Invisible errors,
noobs create 3d files
3D Printing

PICTOPLASMA ACADEMY


FIX IT
watertight
manifold
wrong orientations
normals
rotation
middle point
check size
...
Convert it
slice it, layer by layer
different printers, different settings
filling and size of the layers
resolution and toolset
heat and extrusion
speed and movement
Print it
Home 3D Printer:
FDM = Fused Deposition Modeling (PLA,ABS, Nylon ...)
SLA = Stereolithography (photopolymer)
DLP =Digital-Light Processing (photopolymer)

Industrial 3D Printer:
Granule based: SLS = Selective Laser Sintering or Melting
Powder based: PP inkjet-head deposits plaster (Z-Printer)
PP is the only one with full colour support, but needs to be infiltrated
Even if it looks good rendered
does not mean it prints well...
Get it towards the printer:
.STL --> GCode
different printer technologies
Rough surface, no color, breakable

Finish it up
loose support structure
loose raft
clean
sand
polish
re-drill holes
PP color parts need to be infiltrated to not break
SLS is white, for single color also infiltration

obstacles &
problems
No standards...
file format, size (scale), rendering, polygon count (detail) , manifold, holes, flying polygons ...
3D printing for designers can be hard.
Create, optimize, clean and convert 3D Model
Choose 3D printing method and the right printer settings. Attend print and re-print....

Software and settings overkill.
3D modeling software is hard to learn and complex.
All printers are diffrent!
Try and error.

Hard to polish,
hard to sand,
hard to infiltrate,
needs time...
Create 3D Model
Choose the fitting software
CAD 3D Scanner
Geometric forms:
Blender
3ds Max
Rhino
Architecture:
All the CAD ones and Sketchup
Organic forms:
Sculptris & ZBrush
3D PRINT
Visualize
Rendering: Unlike 2D printing there is no good
preview (Acrobat Reader / PDF)
What you see is not what you get!
looks all diffrent
wireframe
polygons & faces
light & shadow
color information
normals and orientation
...
Scaling?!
Each software has its own scale


JAN NORTHOFF & SAMUEL CARLISLE
3D-Druck-Shop.YOUin3D.com



http://jan-northoff.youin3d.com/
http://samthetechie.github.io/


About us
Services

3D Internet
Virtual Berlin
3D City
Web Services:
Webdesign and Development
3D Copy Shop:
Scanning + Modeling + Printing
3D Printing and Community
Sell new 3D printers
Repair 3D printers
Community meeting
Talks & events
Lidar (Laser)
Pictures
Stereoscopic
Photometric
Silhouette
123 Autodesk catch
3-Sweep
Contact (CMM)

Each Software brings own format.
Always export to .STL

expensive and hard to handle
good for final prototype
bigger print sizes
better resolution
besides plastic materials, also rubber like, ceramic, metal ...

Common mistakes:

More and cheaper photopolymer printer: SLA (Stereolithography).

Static improvement of Open Source 3D Printer Projects. Self reproducing machines (RepRap).

Better workflow, better software:
Pronterface and Rapetier.

Stable construction, different and new materials.

Industrial revolution will take place on the long run...
Future

Use Meshlab or cloud.netfabb.com
For 3D Home Printers: Repetier
(slic3r and skeinforge)
Use Meshlab to check
Choose between
function or visual prototype
not watertight
double hull
inside is outside
lost polygons
holes
points not connected (manifold)
too much and too fine details (min: 1mm ALL parts)
too big (average size is 50mm x 50mm x 50mm)
software bugs and issues
Industrial 3D Printers

relatively cheap to buy
low material costs
need maintenance and repairs
calibration and settings
hard to handle
good for testing and useful parts
small print sizes (200mm 200mm 200mm)
low resolution (FDM)
not able to print all shapes (overlapping)
multi head printers for support structure
PLA, ABS, Nylon , new materials like wood ...

Home 3D Printers
process...
Full transcript