The people behind the PocketNC heard you like CNC PCB mills, so they milled you a PCB mill out of PCB. They announced their surprising new open source hardware product, a pocket sized 3-axis ...

[Thomas Sanladerer] shows how he makes PCBs with a CNC machine and has a lot of good ... Other tricks include leveling a spoil board by just milling it down and mounting different size bits.

This PCB facility is one of the more attractive uses of a desktop CNC mill for me, and the project includes everything you need to produce many single- and double-sided solder-masked PCBs.