Hi Geoffrey, when you say skimming the table, I presume you mean milling out an area to make it flat? In the video, you can see I have already done just that (the MDF sacrificial layer has been pocketed 1mm) but it still was not good as the first pic shows. But yes, you wouldnt even need to skim / pocket the table using this software.

In fact, the Z height is calculated using a bilinear interpolation technique which gives a good result. You could probably get a good result with much fewer probe points (depends on the board size and quality). I would need to experiment to find out.

best,
James.