I am brand new to CNC machines, I just finished building the 1515 and everything seems to run perfectly all the way through the hello worlds air cut. I know how to mount the router, but my question is where exactly do I set the Router11 in place in the lock? Thanks!
Position is adjustable - you'll typically set it up as low as possible, so you can use the shortest endmill possible - that way you have the most rigid setup for a particular job. Also see below around the 45s mark
So how does the machine know where I set the router, as in where the bit is to get proper depth in the cut?
You set the origin by using jogging/setzero, or get yourself the XYZ Probe: See docs:blackbox-4x:hello-world [OpenBuilds Documentation] for the manual process and see docs:xyzprobe:start [OpenBuilds Documentation] for the XYZ probe