I saw this one on Ebay... loved it, but need some plans. Does anyone have any for something like this? http://www.ebay.com/itm/GRAVITY-CHI...=220848084144&ps=63&clkid=2694586785238331123 I like the grandpa feeders, but DH says they look a little tricky. So I am looking for a close alternative. I like how this has an over hang to keep teh food a little dry on a wet day.