I second what Riverderwent had to say. However it is making me wonder exactly why you would want to use the queenless section to do grafting queen rearing with it. Have you other hives that need queens, planning to graft and sell queens, or just wanting to expand and have two hives. If it is the latter of the choices all you have to do is make sure there are frames with eggs/larva in your split without the queen and they will raise their own. Just make sure you feed them while in the process or that there is a flow on.Is it possibly to split a healthy 10 frame hive into two nucs? And then face them at each other and for the queenlees use queen cell cups and grafting?