Last night I finished soldering and connecting the last bits of the FR4 milling machine. I also checked for any shorts, then powered up the Arduino to see if it would light up all the drivers and confirm everything is working. Sure enough, it did!
I hope to get a real test cut done soon, but I have a lot going on tomorrow and through the weekend (my wife’s cousin Julianne’s wedding). I also have to install the control software on a laptop, so I need to dig one up.