3D Printing Meetup
2/11 @ Berkeley Skydeck
By Dreambox
www.3dreambox.com

Why we are doing this?

We
3D Printing

Please Sign-in
• bit.ly/U4KZw4
• 20 cm^3 coupons will be emailed to you

Agenda
• 3D Printing: What’s the hype about?
• How the technology is being used today?
• How you can get/make 3D models?
• 3D printing vocabulary
• 3D model design strategy
• Cool 3D Printing Projects @ Cal

3D Printing: What's the hype
about?

3D Printed Guitar

Sculptor Creates Open Source 3D
Printed Humanoid

Open Source 3D Printed Gun

Staples to offer in store 3D Printing

3D Printed Clothing and Shoes

3D Printed Stem Cells

3D Printing Photo Booth

Skyfall Makers 3D Print Bond's DB5

A Brief History
-Developed 30 years ago
-Rapid Prototyping Machines
-Experimented with in Labs Concept Power
Drill
MIT Media Lab

RepRap
Technology Improvements
Quality Improvements
Venture Money
+ End Products vs. Prototypes
A Really Interesting Story
Why Now?

3D Printing to the Extremes:
What impact could it have?

Pay for digital models and print
everything you need at home

Product companies will become
design firms

Custom Everything

Colonizing the Moon and Mars

Self-replicating Robots and the end
of Humanity

The Nuts and Bolts of 3D Printing
+ 3D printing is a manufacturing process
+ Objective: getting a material in a particular
state (usually solid), to a precise point in 3D
space

So many materials, so many solutions

Fused Deposition Modeling (FDM)
Thermoplastics (e.g. PLA, ABS), eutectic metals, edible
materials

Selective Laser Sintering (SLS)
Thermoplastics, metal powders, ceramic powders

Electron Beam Melting
Titanium Alloys

Powder bed and inkjet head printing
Plaster, Full-Color Models

Laminated Object Manufacturing
Paper, metal foil, plastic film

Stereolithography
Photopolymers

3D Printing Ecosystem
Printer Manufacturers (consumer and enterprise)
3D Printing Services (consumer facing and backend)
3D Design and Printing Services
3D Product Companies
3D Printing Retail Stores

It Takes more than a Printer
3D Modeling Software
- Hardcore
- "Easy" to Use
- Simple Customization
3D Repositories
3D Scanning
Filament/ Materials Suppliers

How is 3D printing is being used
today?

Engineering Club Swag: CalSol

Chocolate

Drones

Model Plane Engines

Buildings

People are building businesses around
3D Printing:
3D Printed Jewelry
3D Printed Phone Accessories
3D Printed Glasses

3D Printing is cool, but you can’t do
anything unless you have models…

How you get models????

CAD
• Sketchup (great for beginners)
– http://www.sketchup.com/
• Autodesk (decent amount of functionality)
– http://students.autodesk.com/?nd=download_center
• Solidworks (most ME students use this)
– http://store.solidworks.com/studentstore/default.php
• Blender (great for animations)
– http://www.blender.org/download/get-blender/
• OpenScad (CAD for programmers/great for
making “apps”)
– http://www.openscad.org/

Or…

Get models from
www.thingiverse.com
*Not everything is necessarily 3D printable

Save as .stl
• Save your model as a .stl file
– Be careful what units you save in
– Be careful what resolution you save in
• Not too high or too low
• Have a student version of Solidworks?
– Save as .stl with eDrawings
– http://www.edrawingsviewer.com/ed/download.h
tm

Now for some vocabulary…

3D Printing Vocabulary
• Layers
• Walls
• Fill
• Supports
• Build Platform
• Filament
• Extruders
• Build Envelope
*pertains mainly to FDM

Vocabulary: Layers
• Layers are 0.4 mm wide and 0.1 to 0.27 mm thick
• Resolution means usually means how thin the
layers are

Vocabulary: Walls
Minimum wall thickness is 0.4 mm (based on
layer width)

Vocabulary: Fill
10% vs. 50% vs. 100%

Supports

Vocabulary: Build Platform

Filament

Vocabulary: Extruder Head
Squirts out filament onto build platform at 210-230 degrees celsius

Vocabulary: Build Envelope/Volume

General Strategies for FDM
• Not all models are 3D printable
• Good resources for guidelines:
– http://www.dreams.me.vt.edu/dreamvendor/TipsA
ndTricks/index.htmldreambox
– http://3dreambox.com/reference.html
– Feel free to email us too at team@3dreambox.com
and we will be happy to help!

Cool 3D Printing Projects @ Cal

There are endless possibilities with 3D
printing!

• Eric Sweet, Sophomore ME, CAD (Solidworks) enthusiast,
satisfied Dreambox customer!
• Some of my designs and prints:
The Wall (from Game of Thrones)
Our Campanile
Coit tower, GGB, TransAmerica Pyramid, Big Ben, etc. coming soon!

Future Dreambox 3D Printing Projects
• Come CAD with Dreambox!
• Want to hang out here with Dreambox and attend some
informal CADing and printing infosessions?
– Meet weekly or biweekly HERE at Dreambox HQ
– Ask questions, CAD together, print your designs, and learn
from and help teach your fellow 3D modeling hobbyists
your CAD skills!

3D Modeling Project
• I’d like to lead a CAD project this semester
• Idea: 3D model (relatively) to scale all the major buildings on Campus– 3D
Print designs and build a 3D “map” of UC Berkeley!
• Fun semester-long goal, great opportunity to learn, improve upon, and
share your 3D modeling skills.
• If interested, come talk to me in a few minutes and we’ll talk more about
the project!

Get creative, experiment with new designs, and challenge the
3D printer…
… The outcomes may surprise you!

3D Printing @ Cal
• Facebook group
• All of these slides will be posted there
• You should all join!
– http://on.fb.me/125Lf1D
– Posted on the Facebook event page
– How we will coordinate CAD/3D printing projects

Thanks for coming!
Like us on Facebook:
www.facebook.com/3dreambox
Join 3D Printing @ Cal!
http://on.fb.me/125Lf1D