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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

Hot wire foam cutters

I‘ve always liked building RC model airplanes. Many designs are available for free online, and from those, I’ve always wanted to build bigger models made from XPS foam. We discussed using our 3018 machines to mill blocks of foam, but if all we need to do is cut complex shapes without the mess that comes from the spindle, the way to do this is with a hot wire cutter. This is nothing more than a length of wire between two contacts that has sufficient current flowing through it to warm the wire. The heat from the wire melts the foam as you cut through it and allows you to shape it, with almost no mess at all. I have a hand cutter that operates as a wand, but I’ve always wanted to build something with automation. Here’s what my handheld unit looks like. You can also make a handheld cutter using basic materials and a suitable power supply. Just look for instructions on the internet; there are many articles out there.

Figure 12.2 – My handheld foam cutter – not quite a wire but it works the same way
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