Wax foundation  Wax foundation or honeycomb base is a plate made of wax forming the base of one honeycomb. It is used in beekeeping to give the bees a foundation on which they can build the honeycomb. Wax foundation is considered one of the most important inventions in modern beekeeping. Wax foundation was invented by German Johannes Mehring in 1857, a few years after Langstroth designed and patented the Langstroth hive on October 5, 1852. Mehring's wax foundation had only the bottom of the cells, and today's base with the foundation of the cells was invented by US beekeeper Samuel Wagner. The Langstroth patent did not call for foundation and let the bees build their own comb. At first, wax foundations were made in the wax foundation press. The first presses were made of wood, while later presses could be made of plaster, cement, and finally metal, which are the ones used today. Wagner also invented the wax foundation rollers, but never perfected them; the first usable rollers were made by Amos Root and precise mechanic Alva Washburn in 1875. In 1895. Detroit inventor Edward Weed invented rollers that can make wax foundation in a continuous roll. Wax or plastic foundation is inserted into a wooden frame through the top and is usually connected to the side bars with wire. It is not used in foundationless frames or in plastic frames where the foundation is made of plastic and is part of the frame itself. Foundation is not usually used in top-bar applications (where no frames are used) such as Top Bar Hives or Warre Hives except sometimes as starter strips. Wax foundation has some advantages over letting bees build their own comb:  For these reasons, foundation had been used extensively in commercial operations. Recently there has been a large movement toward foundationless beekeeping by hobbyists for various reasons. Some of which are listed below:  A frame has to be wired so that the wax foundation could be inserted into it. The foundation is then soldered with the wire by using a spur embedder or electric current. Also extant are wax foundations with embedded wire that only need to be inserted into the frame. Wax foundations are made in various sizes, depending on the frame they will be inserted into. If needed, roller knife is used to cut wax foundations.