Several folks have asked about building the feeders in the pictures I've posted. They are just 4 to 5 feet long 4 inch PVC, the hanging ones have a 90 street L and a 45 street L on the bottom. The one that sits on the ground and is tied to a tree or post has a regular 90 with a 10 inch piece of 4 inch PVC and a cap on the end. Before you put the 4 inch piece into the 90 or the cap, cut about 1/3 of the top out (length wise) to make a trough. Bore 1/4 inch holes in the very bottom of the feeder for drainage. Put a cap on the top and it's ready. 4 inch PVC will hold about 5 pounds of corn to the foot, you can use 6 inch if you want them to hold more. Light weight sewer pipe and fittings are a lot cheaper and seem to hold up almost as well as schedule 40 PVC, if you want to save a few $$.