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A Tinkerer's Guide to CNC Basics

A Tinkerer's Guide to CNC Basics

By : Najia
4.7 (10)
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A Tinkerer's Guide to CNC Basics

A Tinkerer's Guide to CNC Basics

4.7 (10)
By: 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)
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11
Chapter 11: Building a More Capable CNC Machine

Adding a rotary axis

One of the neatest things with this type of CNC machine (and others like it) is to cut or carve a round surface. In our applications so far, we have been operating on the X-Y plane. However, a very simple upgrade will allow us to add the ability to work around a surface instead of just on it. There are two ways to do this: make your own rotary axis, or just buy one. In this chapter, we are going to cover a unit you can buy, while in a later chapter, we will discuss fabricating your own. The rotary axis replaces your Y-axis, allowing the toolhead to move in the X direction, but your workpiece will rotate while that is happening. The nice thing about all this is that you can carve/cut with the spindle, engrave and cut with the laser, and draw with the pen. A rotary axis is therefore a very useful upgrade. In this section, let’s quickly discuss the setup and then look at the impact on the G-code. We will do a deeper dive into working with a rotating workpiece...

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