Table of Contents

Blender 3D Printing Essentials

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 example code

Downloading the color images of this book

Errata

Piracy

Questions

1. Designing Objects for 3D Printing

Opportunities to use your 3D printer

How a 3D printer works

Types of 3D printers

Basic parts of a 3D printer

How is a 3D printer controlled?

The Peachy printer

Modeling dimensions

File sizes

Polygon sizes

Factors affecting precision

Controlling printing costs

Materials for 3D printing

3D printing and your health

What happens at a 3D printing service?

Summary

2. Measuring and Texturing Techniques for 3D Printing

Precision modeling in Blender

Using the Ruler/Protractor

Using the Protractor

Measuring the thickness of an object

Preparing the model for coloring

Leaving the object uncolored

Vertex colors

Vertex painting

Building texture maps

Choosing colors for printing

UV unwrapping

UV mapping the wings

UV mapping the belly

UV mapping the edges of the wing

UV mapping the head

Painting the texture map

Exporting the UV Layout for use in an external paint program

Painting your texture in Blender

Modifying the UV coordinates to add detail

Using the Clone brush to add detail

Summary

3. Making a Blender Model that's Ready to Print

What is special about 3D printing?

Installing the Print3D toolbox

Introducing the Print3D toolbox

Introducing the Mesh Analysis panel

Setting up the units of the scene

Making a 3D model that will print

Making a watertight model

Making a manifold model

Inspecting objects to see if they are manifold or non-manifold

Finding problems that make a file non-manifold

Fixing noncontiguous edges

Typical problem areas with a model

Fixing distorted polygons

Blunting sharp edges

Fixing the junction between blade and hilt

Economizing when 3D printing

Summary

4. Making Strong, Light Objects with the Solidify Modifier

Optimizing wall thickness

Using Solidify for proper wall thickness

Analyzing and modifying the inner shell

Making the dragon useful

Cutting holes for removing extra printing material

Precision modeling—fitting two objects together

Dealing with overhangs and support

If the printer automatically makes supports

Making supports for your model

Exporting your 3D object

Getting the orientation right

Making an STL file

Making an X3D file with a texture

Summary

A. 3D Printing References

References

3D printing services

3D printers – hobbyist

3D printers – industrial

3D objects

Index

Blender 3D Printing Essentials

Blender 3D Printing Essentials

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: November 2013

Production Reference: 1141113

Published by Packt Publishing Ltd.

Livery Place

35 Livery Street

Birmingham B3 2PB, UK.

ISBN 978-1-78328-459-7

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Cover Image by Gordon Fisher (<phi3d@yahoo.com>)

Credits

Author

Gordon Fisher

Reviewers

Sandra Gilbert

Taylor Petrick

Acquisition Editor

Sam Birch

Commissioning Editor

Subho Gupta

Technical Editors

Novina Kewalramani

Harshad Vairat

Project Coordinator

Amey Sawant

Proofreader

Paul Hindle

Indexer

Rekha Nair

Production Coordinator

Nitesh Thakur

Cover Work

Nitesh Thakur

About the Author

Gordon Fisher, as a teenager, studied drafting and built plastic model cars. He got his start in 3D computer modeling back when one would have to create a 3D engineering drawing with a pencil and then input the information into a computer, vertex-by-vertex.

He led a three-person crew in building 3D models of 80 aircraft for the U.S. Army Visual Aircraft Recognition program. He also built an accurate model of the 17th and 18th holes of the Pebble Beach golf course for Callaway Golf's golf simulator. He's currently working with the Open Luna Foundation to create models, X3D and 3D printed, of their parts of their proposed lunar base.

He is the Creative Director at Point Happy Interactive. He has been using Blender professionally since 2002 and has given classes on using Blender and using Python with Blender at Python conferences in Texas and Arkansas. His work has been displayed at the National Air and Space Museum. He is also the author of the book Blender 3D Basics, published by Packt Publishing.

I would like to thank all the people who helped me write this book, especially Subho Gupta, the Commissioning Editor, and Amey Sawant, the Project Coordinator. I'd also like to thank Bart Veldhuisen of Blender Nation and Shapeways and Gary Fudge of mCor Technologies for taking the time to answer all my questions, and all the people who have devoted so many hours to developing better and less expensive 3D printers.

About the Reviewers

Sandra Gilbert started using Blender in the fall of 2000. Back then, there were not as many tutorials or educational resources available for Blender artists, so she, like many others, figured it out as she went along. Over the years, Sandra has seen not only Blender, but the community itself grow and mature. Now, there is a wealth of tutorials and educational materials available.

She is the Managing Editor of Blenderart Magazine. In 2005, she and her friend, Gaurav Nawani, decided to start Blenderart Magazine. Blenderart Magazine is a theme-based community magazine offering Blender tutorials, interviews, and making of articles.

Having been part of such a large open source community and watching how the community comes together to create and accomplish large projects, she knows that Blenderart's success is due in large part to the Blender community itself. The community supports their endeavor in many ways, the biggest being by contributing articles, tutorials, and images to be published in each issue.

I would like to thank all the talented writers and educators in the Blender community for sharing their knowledge and helping in teaching a new generation of Blender users.

Taylor Petrick is currently a student at the University of Waterloo in Canada. He took an interest in 3D graphics and modeling in middle school and has continued to develop his skills ever since. He has a strong programming background, with over six years of practical experience using C++ and technologies such as OpenGL, DirectX, and CUDA. Currently, he is working with ray tracing and investigating its potential for use in real-time applications.

He uses Blender3D both as a tool for his projects and to create artwork as a hobby. He first started using Blender to make models and animations for a video game project and has actively used it ever since. He is excited about 3D printing and how quickly it is entering widespread use. He is particularly interested in the Peachy Printer, a new low-cost option that interfaces directly with Blender.

I'd like to thank Packt for giving me the opportunity to be involved in the review process of this book. It was the first time I had a chance to work on such a project and I was fortunate enough to be chosen as a technical reviewer. Sharing knowledge has always been important to me, so I was glad to contribute my skills to help others learn. I enjoyed working with the team and becoming more familiar with the review process in general.

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