I've built my own CNC machine and if you want to build a CNC machine too, there is no better resource than this blog post
If you're thinking of building your own CNC machine, I highly recommend that you read through this article first. It contains all the information you need to know about building your own CNC machine in one place
It's a long post with lots of pictures, so I'll break it into separate sections: Requirements, Buying Parts and Tools, Building the Machine and Working with the Machine.
anodized cnc machining aluminum parts