Table of Contents

3D Printing Blueprints

Credits

About the Author

About the Reviewers

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Preface

What this book covers

What you need for this book

Who this book is for

Conventions

Reader feedback

Customer support

Downloading the color images of this book

Errata

Piracy

Questions

1. Design Tools and Basics

Design basics

The working of 3D printing

Building for supportless prints

Designing for dual extruders

Designing supportless – overhangs and bridges

Branching out with overhangs

Building bridges

Choosing a modeling tool

Installing Blender

Getting acquainted with Blender

The 3D View panel

The Outliner panel

The Properties panel

The Info panel

The Timeline panel

Proper stance

Blender customization

Setting up for Mac OSX

General Blender tips

Suggested shortcuts

The blueprints

Summary

2. Mini Mug

Getting started

Creating the first shape

Creating a save point

Adjusting the view

Adding a handle

Shaping the handle

Smoothing the rough edges

Shaping the body of the mug

Joining the shapes

Flattening the bottom

Exporting for print

Extra credit

Summary

3. Face Illusion Vase

Getting a profile

Tracing the silhouette

Creating a vase from the lines

Using Solidify to make walls

Making a solid base

Printing the vase

Extra credit

Summary

4. SD Card Holder Ring

Taking measurements

Modeling the finger

Putting the ring on the floor

Making a test ring

Resizing the test ring

Adding an SD card holder

Adding the SD holder to the ring

Extra credit

Summary

5. Modular Robot Toy

Making the connector

Splitting the connector

Building a printable peg

Putting a hole in our pocket

Constructing a robot

Engineering the body

Creating the torso

Making an arm

Shaping the leg

Forming the head

Assembling the parts to print

Printing and assembly

Extra credit

Summary

6. D6 Spinner

Extracting the spring

Starting the project

Modeling the spring

Defining the boundaries

Building the spinner

Extending Blender with gears

Adding a gear to the spinner

Spinning on a peg

Adding the numbers

Building a rack

Adding the trigger

Docking the spring

Modeling the case – lid

Modeling the case – bottom

Preparing for print

Printing and assembly

Extra credit

Summary

7. Teddy Bear Figurine

Making a stick figure

Putting the skin on the bones

Smoothing the skin

Adjusting for the third dimension

Making an armature

Drawing the details

Simplifying the model

Fixing the armature weights

Posing the bear

Inspecting before print

Extra credit

Summary

8. Repairing Bad Models

Downloading a 3D scanned file

Trimming the fat

Orienting the scan

Trimming more fat

Making a flat base

Detail work on the back

Cleaning up bad geometry

Deleting an extra edge

Merging the problem away

Finding hidden points

Uncrossing the lines

Repeat until clean

Final cleanup

Making it a book end

Summary

9. Stretchy Bracelet

Modeling the bracelet

Refining the shape

Printing the bracelet

Editing the settings in ReplicatorG

Editing the settings in MakerWare

Summary

10. Measuring – Tips and Tricks

Using a caliper

Grid paper method

Using the grid paper method with Blender

Summary

Index

3D Printing Blueprints

3D Printing Blueprints

Copyright © 2013 Packt Publishing

All rights reserved. No part of this book may be reproduced, stored in a retrieval system, or transmitted in any form or by any means, without the prior written permission of the publisher, except in the case of brief quotations embedded in critical articles or reviews.

Every effort has been made in the preparation of this book to ensure the accuracy of the information presented. However, the information contained in this book is sold without warranty, either express or implied. Neither the author, nor Packt Publishing, and its dealers and distributors will be held liable for any damages caused or alleged to be caused directly or indirectly by this book.

Packt Publishing has endeavored to provide trademark information about all of the companies and products mentioned in this book by the appropriate use of capitals. However, Packt Publishing cannot guarantee the accuracy of this information.

First published: August 2013

Production Reference: 1160813

Published by Packt Publishing Ltd.

Livery Place

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Birmingham B3 2PB, UK.

ISBN 978-1-84969-708-8

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Cover Image by Joseph Larson (<joealarson@gmail.com>)

Credits

Author

Joe Larson

Reviewers

Henry Garner

Andrew Mazzotta

Thomas P.McDunn

Erwin Ried

Acquisition Editor

Edward Gordon

Lead Technical Editor

Arun Nadar

Technical Editors

Shashank Desai

Dennis John

Chandni Maishery

Sanhita Sawant

Project Coordinator

Shiksha Chaturvedi

Proofreader

Mario Cecere

Indexer

Monica Ajmera Mehta

Production Coordinator

Shantanu Zagade

Cover Work

Shantanu Zagade

About the Author

Joe Larson is one part artist, one part mathematician, one part teacher, and one part technologist. It all started in his youth on a Commodore 64 doing BASIC programming and low resolution digital art. As technology progressed, so did Joe's dabbling eventually taking him to 3D modeling while in high school and college, momentarily pursuing a degree in Computer Animation. He abandoned the track for the much more sensible goal of becoming a Math teacher, which he accomplished when he taught 7th grade Math in Colorado. He now works as an application programmer.

When Joe first heard about 3D printing, it took root in his mind and he went back to dust off his 3D modeling skills. In 2012, he won a Makerbot Replicator 3D printer in the Tinkercad/Makerbot Chess challenge with a chess set that assembles into a robot. Since then his designs on Thingiverse, have been featured on Thingiverse, Gizmodo, Shapeways, Makezine, and others. He currently maintains the blog joesmakerbot.blogspot.com, documenting his adventures in 3D printing.

Dedicated to my wife, who I've seen far too little of during the process of making this book.

Thanks to the people at Packt Publishing who reached out to help me write this book.

Special thanks to the awesome people at Makerbot.

About the Reviewers

Henry Garner started 3D printing in 2010 after buying a MakerBot Cupcake CNC kit as a present for himself. Then a professional software developer with no 3D modeling skills, the obvious next step was to learn the printer's wire protocol and control the print head directly with his own code. The result was the open source Ruby library called Cupcake and many tangled knots of extruded plastic.

It was whilst studying for a Fine Art degree years earlier that he first became interested in programming as a means to create interactive installations and reactive sculptures. The combination of technology and tangible objects remains his passion, and he thinks 3D printing offers a fantastic new way to bring ideas out of the confines of a computer screen into the physical world.

Henry is now Chief Technologist at Likely, a big data analytics company based in the heart of East London's Tech City. When not working, he is often to be found at his art studio by the Tate Modern, floor still littered with extruded plastic tumbleweed.

You can follow him on Twitter at @henrygarner.

Andrew Mazzotta started his career in finance with an MBA. After recently traveling the world, 70 countries in three years, he changed his career for engineering and is now working on three degrees in mechanical engineering, electrical engineering, and computer science. He is currently (August 2013) building RepRaps in Albania for undeveloped areas. The project is in collaboration with Printers for Peace.

He started www.3dhacker.com, a free site dedicated to 3D printing. Members can showcase 3D printers, extruders, printer upgrades, STL model designs, software, printing tutorials, and so on. Additionally, there is a forum for members to support their products/services and a blogging platform for all members to use as well.

I would like to thank all the people that have made 3D printing available to the less fortunate!

Thomas P. McDunn is an engineer and tinkerer and finds 3D printing fuels an ever growing list of projects and experiments. Though formally trained in Mechanical Engineering, receiving a Bachelor's and a Master's Degree from University of Wisconsin-Madison, his interest in computers pulled him on the fence between Mechanical and Electrical Engineering. He constructed his own microcomputer for home experimenting and cut his teeth on electromechanical applications of microprocessors at a time when memory was expensive and code had to be small, not only for memory considerations but for execution speed and hand coding sake. Applying knowledge of mechanical and electrical systems with servo control theory he developed a career in motion control in the Machine Tool Industry and was granted a patent in 1992 for a microprocessor-based transfer line control. He experimented with robotics with a Hero 2000 robot and worked briefly in the industrial robotics industry. Thomas enjoys education and has developed many hands-on curricula for quick immersion of technical concepts. More recently, Thomas has applied his managerial and marketing experience and consults with small businesses in leveraging social media as a marketing tool. Frustrated with the hodge-podge of image sizes used in social media he self-published a book, 72 Pixels that details the image size requirements of the most popular social media applications. Spurred by an episode of The Shark Tank, he started a blog to pass along lessons learned in inventor and investor relations. Thomas spends a lot of time online and is enamored with the growth and accomplishments of open source projects.

The open source movement has paved the way for many innovations and more to come. Thomas studies open source applications in a wide arena including Arduino, GIMP, Inkscape, REPRAP, and Drones to name a few. Thomas has experience of many types of 3D printing and rapid prototyping models, setting up a design, and prototyping bureau including SLA, SLS, FDM, Zprint, and PolyJet machines. He has a Makerbot and has recently added a Rostock Max to his personal 3D printer arsenal. Thomas is constantly on the lookout for world changing applications of 3D printing technology. He recently registered with Robohand, a website and organization that makes affordable prosthetics available for children who are born without fingers using 3D printing technology. He catalogs his personal printing projects at www.tpmtech.biz/Makerbot.

I'd like to thank my wife Holly for her encouragement and patience in supporting my technological passions.

Erwin Ried has been enjoying computers and electronics since the age of seven, when he first received his Atari 800 XE. Playing with the buggy coding examples from the Atari booklet always sparked something special in his mind; the idea of governing the machine.

In 2009, HP and Microsoft chose his website as one of the top 50 world best blogs in the HP Magic Giveaway. Later in 2011, LG electronics selected his invention SinStandby as the best green energy related solution for Casa Eficiente del Siglo XXI.

Now, he is a Computer Civil Engineer (Bachelor) from Chile who loves any kind of challenge including electronics, mechanics, and coding in particular when they involve 3D Printing, electronics, robotics, automation, games and/or programming.

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Preface

A new industrial age is here. Machines designed to build useful and interesting objects have moved from the factory to the home. But these 3D printers can't make things without a design. Whether you have a 3D printer or not, designing things for 3D printers to make is the best way to become a part of the 3D printing movement. Learn to design successful models for home by 3D printing on a Makerbot or other 3D printer with cool hands-on lessons.

If you've ever won a round of Pictionary you've got all the artistic skill it takes to get started. If you've ever gotten past level 1 on Tetris then you've got spatial reasoning. If you've ever played with modeling clay then you know all about designing in three dimensions. You can learn and practice the rules of design that will take your virtual models to real life prints you can hold in your hands as well as enable your creations to stand out on popular websites such as Thingiverse.

This book uses blueprints; simple, fun projects that teach Blender modeling for 3D printing in hands-on lessons. First you'll learn basic modeling and make a small simple object. Then each new project brings with it new tools and techniques as well as teaching the rules of 3D printing design. Eventually you'll be building objects designed to repair or replace everyday objects. Finally, you'll be able to even tackle other people's models and fix them to be 3D printable.

What this book covers

Chapter 1, Design Tools and Basics, will start with the rules of designing objects for successful 3D prints and then introduce the software that will be used.

Chapter 2, Mini Mug, introduces the most common modeling tools to make a simple object.

Chapter 3, Face Illusion Vase, uses a reference image, a picture, to help create the shape of a 3D object.

Chapter 4, SD Card Holder Ring, takes measurement of real-life objects and translates them to the design space. Success is measured by how closely the print matches the real life object.

Chapter 5, Modular Robot Toy, combines separate parts with joints to make a single object.

Chapter 6, D6 Spinner, uses the add-on functionality to allow Blender to create new objects and using that to model a new way to choose a number from 1 to 6.

Chapter 7, Teddy Bear Figurine, introduces a different method of modeling that can be used to make appealing organic shapes.

Chapter 8, Repairing Bad Models, is a good skill to have when working with other's 3D models, particularly those that might not have been made for 3D printing.

Chapter 9, Stretchy Bracelet, shows how advanced 3D printing options can change the way a model is printed.

Chapter 10, Measuring – Tips and Tricks, are important to know when translating real life into the design space.

What you need for this book

This book uses only Blender for 3D modeling available at www.blender.org, a