3D Modeling

In order to make things from either 3D printers or CNC routers/mills that have 3 or more degrees of movement, you need a 3D model.

While your first experience with one of these machines may use an existing test model or one you've downloaded from a site like Thingiverse, eventually you may want to create things of your own.

Here is a somewhat out-of-date list of some free 3D modeling applications: 25 free 3D modeling applications

The general workflow for 3D modeling and printing is: first, model the part, second, turn it into instructions suitable for the machine you're using to make the part, then third, feed the instructions to the machine and fabricate the part.

This page will only deal with the first step; how to model a part, and it will not cover how to use specific software.