Unfortunately this is a common misconception, (although the hungry sales teams of some of our competitors try and lead their customers down this blind alley.)
Whilst it may be technically possible to use the Hebden grids like a “cake cutter” to slice through turf, it would require huge pressure, the like of which could only be applied by a heavy duty ground roller similar to those used by road laying teams.
We have tried to push it through, hit it with a mallet, and even drive over it, but the intermingling of the root network on any well grown slab of turf makes this all but impossible.
Another issue with adding turf in this way is the potential for voids, or pockets of air, between the bottom of the turf and the substrate below, ultimately killing the grass.
It’s best not do it.