I am installing some new packages in hives with 5.1mm foundation this spring. After reading many of MB's posts I am going to start gearing up to make a transition to all medium HBs for many of the reasons he has put forth not the least of which is the weight. Since it sounds a bit tough to regress directly to 4.9mm might it be advisable and practical to transition through the 5.1 for a year then regress to the 4.9 in the mediums in the second year? Seems like a good approach to me. I could do several a year through the deeps at 5.1 and move them right along to the 4.9 mediums the following year. My deeps would only be used for the 'first' regression. I realize it is a little more involved then my simple scenerio above, but you get my approach. This would keep the number of deep colonies to eight or so and I would continue to build numbers with the mediums.
(MB) Would you mind outlining just what equipment you would put together to make a 'clean' transition to all mediums? All wood? Plastic? Etc? I am asking specifically about the brood chambers. If you had a blank checkbook---what is the best route?