I am thinking about making a pvc pipe feeder. I've been reading on here how people do it. And I've decided to use 3" pvc pipe with a 45 elbow attached to a vertical and horizonal pipe. I am going to use a 45 elbow because people have stated on here many times that if you use a 90 elbow then the food binds up easier. The vertical pipe will be 4' tall & the horizonal peice will be 2'. The horizonal pipe that the food flows out of I was going to cut 4 holes 2" so that my chickens can just stick their heads in to get food. What do you guys think about this design?