Here is one I built on that idea. It works but I have switched to mainly plastic foundation and find it easier to use the partial sheet of foundation in centre third of frame and empty space either side which the bees fill with drone cell construction. Can be similarly cut out to cull drone, hatch drones and later filled with honey which can also be cut out.It is possible to fool the bees into building ALL drone comb by giving them a frame designed by Randy Oliver where you have a cross bar 50 mm down from the top bar. The bees believe that this is the bottom of the frame and build ALL drone comb below that. Used in the varroa trapping brood frame method as the varroa prefer breeding in drone cells due to the longed gestation period! Sorry cant post photo as I cant find it!!!
I found this to be true as well. No more than two of the foundationless frames got drawn out as all drone comb. The rest were worker cells with maybe a scattering of drone cells. It had me worried for a week or two.>So let me see if I got this right. If you give bees foundation less this time of year they will make all drone comb?
No. They will draw drone comb until they reach their threshold. Most likely about 20% drone comb.
I use a medium frame in a deep they draw drone on the bottom and just with one scrape it’s off.Here is one I built on that idea. It works but I have switched to mainly plastic foundation and find it easier to use the partial sheet of foundation in centre third of frame and empty space either side which the bees fill with drone cell construction. Can be similarly cut out to cull drone, hatch drones and later filled with honey which can also be cut out.