They'll not only use (and re-use) drone comb, they'll make any changes to it they deem neccessary, although I think they like filling those big cells w/ honey more than anything

, especially after the drones have been kicked out.
Complete foundationless beekeeping; it takes only a bit more time (a little more work for the Beek) but the bees build to the specs they want, not what humans have dictated.
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