I made two "Odfrank Bushkill Vac To Octagon Warre Adapter Boards". It vacuumed the swarm OK but the bees remained clustered under the bottom adapter board. They might have moved up eventually but the boxes had no comb to lure them up. Only an hour or two wasted but the same lesson learned over and over again, don't make to much specialized equipment. Use the bucket vac next time.