Notes:

Additive and substractive processes

'The night I invented 3D printing' https://edition.cnn.com/2014/02/13/tech/innovation/the-night-i-invented-3d-printing-chuck-hall/

An Automatic Machine Tool (Sep, 1952)http://blog.modernmechanix.com/an-automatic-machine-tool/

Why is 3D-printing useful?

Allows for high complexity in design

Access to parts of the design (Build from inside out)

Less material waste.

Why 3D-printing is oversold?

• Allot can go wrong - gallery of failure:
• Limited material set:
• Limited in feature size
• Slow process
• Need for support (requires post processing)
• Post processing (to smooth surface)

Need facetted corners

Need minimum wall thickness

Machines

https://makezine.com/tag/3d-printer-shootout/

http://reprap.org/

https://ultimaker.com/en/stories/97-printing-out-of-the-box

https://www.makerbot.com/

http://3dprinter.sindoh.com/ (Neils favorite, 1000USD, cartridge, Firmware releasable to FabLabs that makes it easier to change material, feeds it self, closed, monitoring with webcam - works like an appliance - reliable, relatively inexpensive - can't yet program the chip to change the material type - the software they release will make that available - but they use the quality control).

https://www.desktopmetal.com/ Lower cost metal printing 10.000 USD

https://formlabs.com/ High res - 2-4.000

A 3D Printed Film - Chase Me, http://www.chasemefilm.com/home/

Machines that make machines:

http://mtm.cba.mit.edu/

Materials:

Lot of invention going on, check:

https://www.proto-pasta.com/

https://ninjatek.com/

Service Bureaus:

https://www.shapeways.com/

https://www.ponoko.com/

https://www.additively.com/en/

http://www.moog.com/3dmetal/index.html

File-formats:

STL: Triangles (right-hand rule) - Can writ a program to make triangles.

PLY

AMF: - a mess

3MF, OBJ, 3ds,

DXF - a mess - don't use it

VRML, X3D, FREP, BREP

The underlaying language for most format is G-code.

Lithopane

Software: http://3dp.rocks/lithophane/

Inspiration: https://www.google.dk/search?q=lithophane+3d+print&tbm=isch&tbo=u&source=univ&sa=X&ved=0ahUKEwiz8OG-s7nZAhUFPFAKHXNEDXYQsAQIMw&biw=1280&bih=659

Tool path makers:

Slic3r http://slic3r.org/

ReplicatorG: http://replicat.org/

http://reprap.org/wiki/Skeinforge

Cura https://ultimaker.com/en/products/ultimaker-cura-software

Sindoh (Neils favorite printer) has it's own

View and share:

https://sketchfab.com/

https://www.thingiverse.com/

scanning

Milkscanner: Understanding scanning, scan large items: http://milkscanner.moviesandbox.net/

Digitizer Arms: https://gomeasure3d.com/microscribe/

Laser Scanning DIY: http://mariolukas.github.io/FabScanPi-Server/ - works good for some materials and not for other.

Nextengine: http://www.nextengine.com/ 3000USD

Photogrammetry (Mobile) Scanning:

https://www.autodesk.com/products/recap/overview

http://www.agisoft.com/

http://ccwu.me/vsfm/ (DIY) VisualSFM (free)

colMap.... demuc.de/colmap

https://www.youtube.com/watch?v=20jvnEtgRIU

Problem:

• Sometimes it can't figure it out
• Dimensions can be of (related to but not the actual object)

Speckle: https://patents.google.com/patent/US8150142

OpenKinect: https://openkinect.org/wiki/Main_Page

ReconstructMe: http://reconstructme.net/

Sense: https://www.3dsystems.com/shop/sense?redirectFrom=cubify (one of the nicest tools right now)

Requires some skills to use it:

• Move smoothly and keep the distance
• Keep the scanner still and move the turntable
• The more steady and smooth the better scan.
• Maybe make a little rig

Structured light:

• http://mesh.brown.edu/3DP/
• http://www.celluon.com/
• http://academy.cba.mit.edu/classes/scanning_printing/light/index.html

The problem:

The light has to get from the projection to the camera - surface .

Light stages: http://www.pauldebevec.com/

Sends light and detects light reflections from all sides at the same time.

Making a sphere of light

http://gl.ict.usc.edu/Research/SpecScanning/

Face Scanning:

http://gl.ict.usc.edu/Research/DigitalEmily/

Neils project:

• Making LED light sensors

Googles

Tango: https://developers.google.com/tango/developer-overview

ARCore: https://developers.google.com/ar/

SLAM: https://en.wikipedia.org/wiki/Simultaneous_localization_and_mapping

Test print:

https://www.thingiverse.com/thing:636363

Clean up Designs:

http://www.meshlab.net/

https://www.autodesk.com/products/netfabb/overview

http://www.meshmixer.com/

High resolution printing:

https://www.nanoscribe.de/en/applications/micro-rapid-prototyping/

group assignment:
      - test the design rules for your 3D printer(s)

Individual assignment:

      - design and 3D print an object (small, few cm)
         that could not (easily)be made subtractively
         Complex, overhang, design Fusion, Solidworks, Blender, Rhino
         Export to STL - turn into tool path.

      - 3D scan an object (and optionally print it)

3 Steps:

Take pictures

Upload pictures - and create mesh

• ReCap (Windows only)

https://www.gtk.org/download/macos.php

Install Jhbuild

https://wiki.gnome.org/HowDoI/Jhbuild

Then install GTK+

https://www.gtk.org/download/macos.php

Install VisualSFM (free)

http://ccwu.me/vsfm/

Clean the mesh:

Meshlab

MeshMixer (clean surfaces, modify shape)

http://www.meshmixer.com/download.html

NettFabb (Windows Only)

https://www.autodesk.eu/products/netfabb/overview

3D-printing notes:

Meyahas

Multimaterial print

Design from the inside and out

Space get rid of support material

3D Hubs: The 3D printing handbook.

Calibrate materials

Everytime you buy

GrabCad:

Info about tolerance and machines

Tutorials

Shape shifter by Autocad

-Play with parameters

AppBots101.com

Models created by scripts

Neils takeaway:

Know designrules

Use support and infill as a part of the design process – to change material properties

Few multi-material FDM-printers.