They cut really well but do not mulch the trimmings so you have to trim out the foot of the hedge by hand & then burn all what you have cut off. You used to be able to get blades with a couple of saw teeth at the point of each blade to enable you to cut whatever would pass between the points.What will these type of machines cut ? Was thinking of getting something like this to trim Leylandii , but would be nice if it did fieldwork too. Mostly thorn & bramble. Thorn about 3/4 " thick at most.