Here are the MAA (home-made!) Miller feeders. They are similar to the feeders from Beesource.com (see the "build it yourself" plans), but simplified to avoid all the dado cuts. The bottom is made of 1/2" Douglas fir plywood (1-side good) that is glued and nailed to the bottom of the frame (which is okay because we have the "bee space" on top of the frames in our hives). The waterproofing was done with 2:1 mixture of raw linseed oil and beeswax that was "painted" over the surface of the feeder trays and cooked into the wood using a heat gun. The added functionality is the screened entry slot cover that can be removed for cleaning and for feeding the bees with solid food. Slots cut on the bottom of the plywood strips center the cover over the entry slot. The feeder can be kept on the hive year around providing the top ventilation over the active season, or insulation and moisture absorbency during late Fall, Winter, and Spring (filled up with insulating and moisture absorbing materials such as wood shavings, newspaper, rags, etc).