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

Securing the workpiece

My CNC machines all have tables made of aluminum extrusions, except for one that uses a piece of plate metal. Both would get ruined if I made a mistake and cut through my workpiece and into the table. Eventually the structure would weaken, and I would have to disassemble the entire Y-axis assembly and replace the table – not something I would relish having to do multiple times. Consequently, as has been mentioned before, I like to put a piece of waste board between my workpiece and the table. The waste board is typically made of MDF or plywood and is sacrificial. However, with a thick piece material on top of my table and under the material I am trying to cut or carve, I have to find a way to bolt the material to the waste board and the waste board to the table.

You can purchase waste boards for your 3018 on Amazon or AliExpress easily enough. These often come with countersunk threaded inserts as well, so that you can secure your board to the table...