3D Printing….For the Win!

What we’ll cover….• What is 3D Printing and what are it’s applications?• Types of 3D printing • What is CAD software?• Getting Started!

What is 3D Printing?3D printing is the process of taking a digital model and making it a physical object. When you write a document on your computer, you create a digital version, then press” Print” to create a physical copy. 3D printers work the same way, with one more dimension.

Unlike a traditional subtractive manufacturing process, in which an object is carved out of a piece of material, 3D printing is an additive manufacturing process in which an object is built over time by stacking layers of material directly on top of each other. These layers fuse together to create 3D printed objects.

Types of 3D Printing Technologies(This isn’t all of them! Yikes!)

Stereolithography (SLA)Digital Light Processing (DLP)Fused Deposition Modeling (FDM)Selective Laser Sintering(SLS)Selective Laser Melting(SLM)Electronic Beam Melting (EBM)Laminated Object Manufacturing (LOM)

Sterolithography (SLA) Oldest method in history of 3D printing. Still being used today Involves a uniquely designed 3D printing

machine called a sterolithograph apparatus, which converts liquid plastic, or photopolymers, into solid 3D objects via a laser.

ideal solution for creating prototypes because it creates highly accurate, durable objects fairly quickly and relatively inexpensively.

Used from medical to manufacturing for prototypes and sometimes final products.

Example: Car manufacturer might make a prototype of a door handle to test and perfect and then use perfected prototype as a template for mass production.

Digital Light Processing (DLP)

Very Similar to SLA, and works with photopolymers

Uses a more conventional light source , such as an arc lamp (a light that uses an electric arc to produce light)

Much faster than SLA as each layer is done a one time.

Use is similar to SLA

Fused Deposition modeling (FDM)

Involves extruding a thermoplastic material in millimeter thin layers to produce an object.

As each layer is extruded it bonds with the previous layer.

Requires support material for overhanging geometry

This is what we’ll be using! Popular with hobbyist. Most

popular for consumer use. Also used by industries such as

automobile, medical, and food industries

Terms You Should knowFDM: Fused deposition modeling, the 3D printing technology used by MakerBot.

Slicing: The Act of turning a digital 3D model into thin layers used for 3D printing

Filament: Material used to build your 3D prints

Extruder: The “hot glue gun” of your 3D printer; it uses filament to draw out the layers of your 3D prints

Build plate: Surface on which prints are built

Selective Laser Sintering (SLS) / Selective Laser Melting (SLM)

Like STL uses a laser as the power source to form solid 3D objects

Main difference between SLS and SLA is that SLS uses powdered material in the vat instead of liquid resin as SLA does.

Doesn’t not require support structure as the object being printed is surrounded by powder.

SLS can be used with a variety of materials like plastics, glass, ceramics. Just enough power to fuse the powder together

SLM actually melts the powder into one homogenous part. Often used with pure metals.

Used mostly in manufacturing with SLM used primarily in aerospace and medical orthopedics

Electronic Beam Melting (EBM)

Similar to SLM Uses an electron beam to melt

metal powder together instead of laser.

Carried out under vacuum conditions

Makes a solid piece so is favorable for medical industry (implants), and other hi-tech sectors such as aerospace and automotive.

Mainly used for medical implants and aerospace.

Laminated Object Manufacturing (LOM)

LOM printers use continuous sheet coated with an adhesive, which is laid down across substrate with a heated roller that melts adhesive bonding layers of material.

Laser or Knife is then used to cut out design.

The layer/ cutting process continues until object is finished.

Question:What are some common themes among 3D

printing types?

CAD software…. What is that? Cat Ate Dog? Gross

Computer Aided Design Used to make 3D blueprints in a 2D space. (What does that even mean?) What is 2D? What is 3D?

Let’s Get Started! Go to www.tinkercad.com Click Sign Up

Now it’s time to learn… Click it! (we know you want to….Learn…. Click “LEARN”)

It’s time to be Basic… (You have to be basic before becoming complex…. Or something like that)

Homework…(Really?! I didn’t sign up for that!)(It’s painless… We promise…. Or do we?…)

If you have computer access at home…. Continue to explore Tinkercad (maybe even take a few more of the

lessons!). Think about what you want to create tomorrow.

Can’t be any larger than 8cm x 8cm Check out Thingiverse for inspiration

3D PrintingDay Two

Time to get creative… anyone up for becoming a 3D printing Shakespeare?

First Login to Your Tinkercad Account…. And then…

Rename that project!

“I can make whatever I want?! I’m Building a City!” That’s Awesome!... But first….

Just a few Rules… Whomp

Project cannot be larger than 8cm x 8 cm

Projects must be library appropriate.Projects may be scaled down if deemed necessary for printing speed.

When can I get my creation?

We will be displaying your creations for one week at the branch where you are attending this camp. After that, we’ll be calling you to come pick up your creations!

(Psss… Make sure we have your contact information… we have a contact sheet available!)