We began the chapter by choosing four objects from our physical world, and then we created a digital likeness of each of them. Using two programs, 123D Catch and the Autodesk 3D Print Utility, we were able to accomplish this with relative ease.
The resulting 3D models that were made of the example objects used in this book are shown in the following image:
Each of these models consists of a single watertight mesh. These models are saved as STL files, the proper file format for 3D printing. They are almost ready for printing, but one last step in the process is required.
We need to write a set of instructions for each model that tells our ...