I am a hobbyist, and it is my first time to making 3-axis machine. I wish my son (4 years old, ha ha !) will have the skill of mastering CNC and 3D printing, but there is no other reason for me to buy one at home. After I saw the one made from old CD ROM, I think maybe I can make one. So, I start from zero… reading a lot of posts….and finally, I made this.