Dear friends, From the sanitary point of wiev I feel as very important to find a way how to construct maximum combs without using foundations since the wax used in manufacturing them may be contaminated by cumulated residues from previous treatments against bee diseases especially varroa. I dont know if plastic frames would be a solution here, since they maybe can cummulate residues, too. So I suggest to find answers on the following questions: 1. How to arrange a frame for free comb construction to make it acceptable for both, the bees and beekeeper. This means the frame must have some support (vires, nylon thread or so) and bees should build regular combs in them, and this not only on individual combs inserted somewhere between other combs but also in a block arrangment (swarm in empty chamber ect.). 2. How to make the free comb construction method most effective? This means to achieve maximum worker cells and so obtain combs useful for brood rearing as well as for storing (and extracting) honey.I would invite any idea related to this matter, e.g. what is the proportion between worker and drone cells in TBH ? Best regards Vladimir Ptacek ---------------------------------------------------------------- Fac. Sci., Dept. Anim. Physiol. E.mail: [log in to unmask] Masaryk University phone: .42/5/41129 562 611 37 Brno, Czech Republic fax: .42/5/41211 214