Hi

I am trying to figure out how to make holes on panels with different shapes merged together. It it is 4 different 6 different positions of circles and squares, however, one set of the circles, the vertical ones, don’t seem to be able to merge with the other shapes in order to subtract them from the base shape. The highlighted merge on the bottom is not recognized by region difference when plugged into the bigger merge

Is there another way, that is better? Or is there some principle of perforations I have missed when merging these shapes together?

Many Thanks

merge_perf_2.gh (68.9 KB)