Re: Nuc produced queens
Here is how I do that very thing here using 2 story nucs. Start this during a flow.
I split the well populated 2 story nuc with a queen excluder. The bottom box has the frames of eggs, open larva, and pollen. The top box has the queen and the rest of the frames which are older with sealed brood, and a frame of stores. The next day in the morning, I remove the top box to the side facing the other direction. The box left in place has most of the nurse bees as that is where the pollen and open brood and eggs were. It now gets most of the field force bees as well. It will now be in swarming strength and in a flow and will make very well fed queen cells.
Now I have choices.
In 10 days I can make up nucs and cut cells out of this one to give to all the nucs I've made up from other hives or two story nucs.
Or in 6 to 7 days I can move this bottom box cell builder to a new stand in the yard, and put the queen box back in it's place adding a story to it. This way, the cell builder cells are all sealed, and that box will lose it's older field force back the the queen in her box. This will reduce swarming from the cell builder box as they have no older bees now, but will still be strong enough for queens to emerge and one of them take over the new nuc.
Or, do some other thing of your choice. This is just one of many ways to get good well fed queen cells for making splits in your beeyard.
20+ years, raise my own queens, feed when needed. I treat, but have not perfected varroa management yet.