Thank you for the video. I always like to watch good systems work. I was just making sure you understand that if you are to setup well for a consistent process that is always relative to an exact position on the machine you really need to be working with two sets of coordinates.

One set is zeroed when you reference your machine home, and those are absolute machine coordinates.
The second set is zeroed relative to the part when you setup a job.

Your tool changes should be based on absolute machine coordinates.

You can have lots more sets of coordinates than that when you start setting up different offsets if you have fixed fixtures and jigs on your machine, but that will get you started.