Book Image

3D Printing Blueprints

By : Joe Larson
Book Image

3D Printing Blueprints

By: Joe Larson

Overview of this book

A new industrial age is here. Machines designed to build useful and interesting objects have moved from the factory to the home. Whether you have a 3D printer or not, learning how to design your first 3D models is the best way to become part of the 3D printing movement. 3D Printing Blueprints will teach you, step by step, the tools and techniques of using Blender, a free 3D modelling program, to build 3D models for printing with simple and fun hands-on projects.3D Printing Blueprints uses engaging and fun projects that teach Blender modeling for 3D printing through 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. Through the course of doing the blueprints you will custom build one-of-a-kind objects that you can call your own. Starting from a custom vase formed from a picture, lessons will progress to a multi-part modular robot toy. Then simple machines will be designed with custom gears and functions. Eventually you'll learn how to download models from the Internet and make custom objects. Finally you'll be able to build models with near real life specifications and make a print that can be used for small object repair. 3D Printing Blueprints will teach you everything you need to know about building custom 3D models to print successfully on modern home 3D printers.
Table of Contents (17 chapters)
3D Printing Blueprints
About the Author
About the Reviewers

Chapter 8. Repairing Bad Models

There are many sources for 3D models on the internet, but not all of them were made for 3D printing. Even if their tolerances are good for 3D printing, the meshes may have holes, flipped normal, or just general bad geometry that will need to be fixed before it can be printed. Being able to find and fix bad geometry will ensure good prints.

One of the coolest sources for 3D models is from captures of real life objects. There are programs and even online services that can convert a series of photographs into a 3D model. However, it is highly unlikely that those scans will be comprehensive. Sometimes certain angles are difficult to capture and usually the subject being captured is on a surface that cannot be photographed through, such as the ground. Consequently, there will be holes in the scan that will need to be fixed.

In this chapter, a model captured from photographic data and processed by a desktop application will be cleaned up for print using some new techniques...