Getting Started With CNC

CNC Workflow
Getting started with your first CNC machine requires a bit of a learning curve.  However, with new technology in both the hardware and design applications these machines are becoming easier to use than ever before. The most challenging aspect of learning to use any of these machines is becoming familiar with the software used to design the parts and create the files for the machine(s) to process.  When teaching new users how to use the various machines listed below, I always start by explaining that 90% of what you are about to learn is how to use the software and 10% is actually using the physical machine.  The good news is once you understand the basics of designing parts and using one of these machines, you will find that learning to use any of the others is a relatively similar process.
All CNC machines share a similar workflow, when designing and creating parts, which can be broken down into three basic steps; Design, File Preparation and Processing.
  1. The first step to using a CNC machine is known as CAD, which stands for Computer Aided Design.  This is simply using a program to digitally design the part you want to make. This can be done using a variety of different programs, such as, Adobe Illustrator, Sketchup, or AutoCAD, which allow you to develop files in either 2 or 3 dimensions depending on the application.
  2. Once you have designed the part you then need to prepare the file for processing.  Often referred to as CAM - Computer Aided Machining, this process depends highly on the type of machine you are using.   This can be as simple as using a specific color in the CAD software (laser cutter), to having to use a dedicated program to create a series of tool paths and G-Code for your machine to interpret (CNC Router).
  3. The last step is actually using the machine to create the part you wish to make.  This is done by importing either the CAD file or G-code into the driver controlling the machine and inputting the proper commands.

Laser Cutters

3d Printers

CNC Routers