I built and installed the 3 top feeders on my 3 Warres today. The following pictures show how the top feeders are built. The first pic (sorry, blurry) shows how the feeder bottom is about 10mm above the bottom of the feeder, leaving a space for the bees to crawl over the top bars to access the feed. The secong pic shows the inside of the feeder. A can (the one than came in the package) will be set over the hole.