Book Image

A Tinkerer's Guide to CNC Basics

By : Samer Najia
5 (1)
Book Image

A Tinkerer's Guide to CNC Basics

5 (1)
By: Samer Najia

Overview of this book

Until recently, Computer Numerical Control (CNC) machines belonged to the realm of heavy industry, but as technology becomes cheaper and smaller, these machines now can be used in home workshops. It’s not easy to get started, though, but thanks to this guide, you’ll be ready to take on a variety of projects in no time. A Tinkerer’s Guide to CNC Basics contains everything you need to get set up at home with computer-controlled machining and fabrication. Sparing you the theory, this project-laden guide helps you learn by doing. Once you’ve got to grips with the principles of CNC and installed the 3018 Pro CNC machine, you’ll gradually move from simple projects such as basic engraving to more complex milling and machining techniques. You’ll even learn how to upgrade your machine to accomplish more sophisticated designs. The plethora of projects in this book will keep you busy and give you the practice you need to get started with your computerized workshop. By the end of the book, your computerized home workshop will be one step closer to realization, and your machining skills will be taken to the next level.
Table of Contents (15 chapters)
11
Chapter 11: Building a More Capable CNC Machine

Engraving your workpiece and setting depths

Let’s now tackle engraving your workpiece. Maybe you have cut your part on the 3018 and it looks awesome, and you’d like to mark it in some way. Here are some engraving use cases:

  • Decorative purposes
  • Adding a logo or some sort of identifying mark tying the part to you
  • Inventory and serial numbers – so that you can tag a certain part
  • Graduation markings (for example, ruler notches for measurement)
  • Labeling (for example, to indicate the function of a control that might later be attached to the finished product, such as an indicator of where the on/off detents are)

If you are working with opaque materials, letting paint (or for wood, stain) seep into the engraved areas will enhance the visual attributes of the marking. On/off marks can be marked in red on a white surface, while ruler notches might be in black on a metallic piece. Engraving need not be done with an endmill, and in fact, I generally...