Setting Z for models

[cartar]

I am doing a 3d model which has the rough in and then the finish step.

After doing the rough in and changing the tool, where do I measure the Z axis too.

[srwtlc]

You can zero off the table and then do a Move Nudge (MN) to what your material thickness is set at in your file each time.

You can zero to a piece of scrap that is the same thickness as the project.

You can choose to zero to the table when creating the file/toopath and then zero to the table each time.

[myxpykalix]

The best method is when starting a carving is to size your material so that you will have uncut material left outside the carving area upon which to re Z to.
So if you are doing a 8"x8" carving then start with 10"x10" material if possible.