When it comes to precise DIY making, few conventional human-controlled tools offer the accuracy and repeatability that some projects require. Controlling tools with computers makes precise, repeatable manufacturing a matter of running routines, and managing the physical aspects like calibration, anchoring workpieces, loading filament, and managing worn cutters, end mills, face mills, or bits.

If a manufacturing process involves tools, the chances are, that it can be adapted for CNC control. The end devices in question determine whether a controller is used for either additive machining (such as 3D printing) or subtractive machining (mills, plasma cutters, laser engravers, and routers).

I'll split this up into my 3D printing (additive) and CNC routing (subtractive sections).