Re: Putting a box back on a Langstroth without killing bees
enjambres "paint stirrer thing" for those that missed it like myself.
"You can move on to crushing virtually no bees if you use paint stirrer sticks set diagonally across each corner of the box being lowered on to. You need the thicker variety of paint stirrer (or two thin ones glued together?) so that there is just barely not enough room for the bees to get through the gap, but just enough for them to feel slightly pinched and wiggle safely back into the hive.
Once the upper box is down, you can then remove the paint stirrer sticks, one by one, letting each corner down gently. There are some tricks to doing this, but I use it for every box I set down, every time and only rarely do I squish a bee. I can work my whole yard of 10-frame deeps stacked five boxes high per colony and only discover one or two previously squished bees as I go through the boxes. And I re-stack every box as it comes off its stack as I go, so I have twice the chances of smushing them. I think squashing bees upsets the girls and it certainly increase the chances of disease transmission."
If you only have a hammer, you tend to see every problem as a nail.