I figured I would reach out to Warre beekeepers who may have experience with using half-frames (as per Gilles Denis: http://ruche-warre.com/des-cadres-ou-des-barrettes.html
). I am considering using this concept in the brood nest of my nationals with larger dimensions (43cm length, 24cm depth. Denis states that he chose this design after observing that colonies only attached combs in the top 1/3 of nests (corresponding to honeycomb portion). Could this concept work without too many attachments in the brood nest of my hives? TY for insight.