In Redmist's thread "homemade pans" I tried to describe what we use and how we make them. Today my son and a friend made 4 new pans for the cages we'll need as soon as everybunny kindles and the kits are out of the nestboxes. We took photos that I hope will make it clear how to do it because I am not so good at describing this sort of thing and son is off to the woods to bring out pine logs (and he isn't fond of writing)
Our cages are all 30'' inches deep and the new ones will all be 4' long, so the pans are made for that size. Your cage size and sizes available for sheets of metal in your area may vary. We make the pans so they extend a couple inches all around the cage and then the "lip" or rim may vary from 2 to 5 inches. On these pans the ends have higher edges than the sides, but that is just because that's how it worked with the size sheets we had.
Our cages are all 30'' inches deep and the new ones will all be 4' long, so the pans are made for that size. Your cage size and sizes available for sheets of metal in your area may vary. We make the pans so they extend a couple inches all around the cage and then the "lip" or rim may vary from 2 to 5 inches. On these pans the ends have higher edges than the sides, but that is just because that's how it worked with the size sheets we had.