Anet A8 converted to a CNC PCB milling machine

My custom PCB milling machine at work with a modified Anet A8 3d printer. I printed the brackets and sourced the spindle motor with PSU off of ebay. I also need to modify the lastest Marlin software so that it probed in the X0 Y0 corner in a 80mm grid of about 15 points per axis. This made sure that when a G29 was issues before the print we had plenty of data points for a level surface. I also had to put together a cable with 2 crock clips on the Z axis endstop so that it could feel out the points with electrical continuity.
The G-code was produced using Eagle and "PCB to Gcode" ULP file. I had to modify the output file G-code so that the milling piece started inside the probed grid area. I had a few issues initially because the PCB ended up outside the probed area and the end mill decided to bore right through the PCB into my hot plate. Once this remedied I had to dial in the milling depth and settled on about 0.17mm

[@TahaLahlou]

made a vid how did you use "PCB to Gcode"

[@individualone]

Just recently upgraded one of my anet a8s to cnc route. I'm using a Dremel with flex extension...quick swap mount from Thingiverse 👍 what is the best app for download to generate tool paths offline?