By his own admission, this is really CNC basics for hobby-grade CNC routers and mills. He starts off talking about his custom-built machine along with some common machines in the $500-$5000 range.

[siemen] has entered the wonderful world of Hobby CNC with his low-buck build of this gantry-style router. It embodies everything we here at HaD love: resourcefulness, perseverance and results. [si… ...