Who mentioned an assembly?
After some testing I found the circular array didn't like trying to array the left over material of the wedge. It was better to start with a hex shaped extrusion and extrude cut one side of it and do a circular array (feature in the part) of that cut. I have attached an example, but I think I have a newer version than you do - so you may not be able to open it. Maybe the screenshot will help.
View attachment 37412
It is hard to tell in the photo if some of those areas are revolve cut or if the entire thing has 6 sides. I opted to make it six sided in my example.