His latest one is CNC Dummies for Routers (see below ... built machine along with some common machines in the $500-$5000 range. He then gives a simple sketch of what GCode looks like.

Mills, lathes, drill presses, laser cutters, and CNC routers are no stranger to the any maker’s arsenal of tools. Do you know what isn’t? A DIY Skeeball machine. This, ‘should be a project ...