Master Jim, yes I remember you stating this on another topic, I remember the words LAZER CUT. Not something to easily forget. That is remarkable that the bees can bee so precise i.e. lazer cut.
Iddee, perfect advice..... I did not know about burr comb and likelihood of food, not larva. I have seen brood in tiny spaces between my feeders. But it was not typical burr comb, there was space so the bees filled it.
Blessings