I scraped off a large amount of burr comb full of honey from one of our nucs during a hive inspection recently. I left it on top of the inner cover afterwards so the bees could eat up the honey. This is what the burr comb looked like a couple days later.

The bees took all the honey from the comb and then began working on the comb, sealing it to the wood and creating a set for a yet-to-be-produced science fiction film.