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

Endstops and electronics

A distinct item you have not seen added to this design is endstop switches. You can use exactly the same switches that you acquired for your 3018 and mount them on the extrusions as you see fit (do not use the switches that come on rod mounts; those switches are fine, but their mounts are not). I haven’t done this here as they are not essential, and installation will depend on what you buy. I suggest you place them at the 0,0 position, and so the switches are at the left at the rear of the machine if you are looking down the Y axis from the X-axis tensioner. If you look at Figure 8.1, this would be the corner of the machine at the bottom left.

For electronics, you will need the usual components – notably, the board, power supply, and optionally, an emergency stop switch and LCD controller. You can 3D print or fabricate a box to enclose the electronics and mount the box against the feet of the machine. If you enclose your machine, you can run...