Gary
#1
We are not topping out on the z axis. Last night we were using a 2" bit and 3/4" mdf. The safe z-height in the cutter tab is set to 1.00".
#2
We are not editing any of the fill-in sheet options when running the actual cut. We run with no offset and no proportions for any axis. I train users to set their x/y zero location with a C3 (zero x/y with prox switches) and then Z2 to their desired location if needed before they do anything else. Then I train them to zero Z (C2) to the material or table depending on the job.
Regarding the spacebar, that's interesting. What do you consider "light on RAM"? Is clicking the "Stop" button with the mouse any less problematic? I will train future users to never restart a file but I imagine that will be a very unpopular solution especially when running long files.