Check out my BYC page. Turns out, it was really similar to the one posted in that other link, except I hadn't seen that link when I made mine. I had just gone to the local thrift store looking for anything that might work, saw the vegie tray and decided to try it. Nice thing was, the tray only cost me $1 and I was able to use the tray for the feeder and its lid for the waterer. The buckets were free at the grocery store's deli section so both together cost me just the $1. I have since modified mine to put the holes in the bottom of the bucket because it wasn't feeding that well with them in the sides. I have more buckets and could just start over but I'm being lazy - getting the bolts into the tray between the "ribs" of the vegie tray was not that easy....