This will be REALLY COOL to see it moving dirt!
Looks like you are using a CNC mill? What mill, did you do your own conversion ?
About the bottom of the pan, looks like a spiral in with an end mill? Would that have been better with fewer straight passes and a fly cutter or face mill, or is this a function due to the CNC operation? Please know I am NOT a machinist, just trying to add to my limited hobby skill set.
As someone else earlier in the thread stated, PLEASE finish this. It looks great now and will be fantastic with some dirt on it!
Jim