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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

Selecting test patterns

Whenever I set up a new CNC machine, I attempt to cut a series of basic shapes first and then work my way up to more complex tasks. I prefer to start with some simple carving into MDF or plywood. I try to avoid cutting through the material because I want to test the machine against the material and get familiar with how well it handles certain tasks. Not all machines (or end mills) are created equal, and this is the time where I look for obvious limitations.

Choose your test material and bolt it down to your waste board. I typically start with something that is 20-25 mm (up to 1”) thick or more and set my design to a cut depth of 1 mm or so, gradually increasing the depth of my cuts to see how well they come out. I am effectively carving or engraving here, and for our purposes that’s good enough. You might want to prepare several small test boards so that you can use them to calibrate your machine. By cutting only to an initial depth of 1 mm...

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