Thanks for the comments!
On day 12 (Monday) the queens in the nuc hives are caged so the nucs will be queenless 24 hours before the cells go in.
Day 13 (Tuesday) the queen cells are taken from the finisher hive. Here they are being cut from the bar, there is quite a bit of burr comb so they are cut off in a strip.
They are then cut into individual cells. The bees finished 26 cells, 2 had to be sacrificed too close together, so I ended up with 24 cells, exactly what I wanted, because the previous day I had made 24 queenless nucs.