I just built myself an automatic feeder!!
I looked in my shed, and way in the back, i found some PVC.... the feed spillage is from putting the feed in.
and this is why i wanted to make one..... that was the only feeder I had so i usually just scattered feed. incredible amount of mess.
I built some of those too! I have 2 outside and 1 inside. There is some spillage, but no more than any other feeders I've used. The outside ones, we got these black rubber caps that we close off the top always, and the bottom at night. The chickens like them!