I have been raising queens but letting them make queen cells in the middle of the frame. This have worked very good for me. 10 days later I cut them out with a generous portion of the comb to put it into the mating nuc. My problem has been in getting it to sit in the mating nuc without falling or crushing the queen. I have been using donor comb that has open brood on it to hold the queen cell. I have used tooth pick to spear the edge of the queen cell comb to the donor comb. I have also just tried to press them in place and using thin wire to hold them to an empty frame so the QC will hover next to the open brood. What is needed is some method to hold the cut comb with the QC in the hive with plenty of space around it as the QC usually sticks out a bit. I had a couple that fell to the bottom so they were ignored. What does everybody else use? Has anybody made or modified a frame to hold a cut out QC.