I found a new way to do it... I just draw seperate lines around the actual plate. (half the distance as the tool diameter so that I can cut on the line, as you said)
I can let the open vectors beeing closed by vcarve... but only the vertical lines.
It seems to work when selecting all horizontal lines at once and then start closing the open vectors.
Maybe it's faster to just draw one line and copy it at the right distance between the plates. https://youtu.be/xy4LK1sOOfs
Well... I hoped that i was just too silly to use the software and that there is a hidden feature or so. Because... with this kind of plate production you always have a longer machine runtime because the toolpath are doubled.
And a much higher risk that something can go wrong. (with the unneeded cutting lines as the spindle will move through the cutted toolpath again... we all know that a cutter will still cut some more material off, so chances are that the fully cutted piece will fly away when it comes in contact with the spindle after it is beeing completely cutted out)