Next spring I'm planning to breed some queens to have on hand. It'll be my first attempt at grafting and I'll be using the starter/finisher system that Lawrence John Conner describes in his Queen Rearing Essentials book.
Will a double five frame medium packed to the gills with bees work as a finisher? With the queen below an excluder? Or is this just too small to be effective? I hope to have 15-20 cells in there to be finished.