This is a drip tray that mounts to the side of the cage for drippy water bottles. We used them for our ferrets and guinea pigs to help keep the cage from getting dirty. The first one we created was just a normal tray but we found that it was hard to clean. We then made the tray part very sloped. It is very convenient to clean now and the animals tend to lick the tray empty before moving to the water bottle so it does not need to hold much. I used #6 1/2" sheet metal screws to screw it together. I am a bit new to making so take that into consideration when it comes to my notes. I printed this in PLA. There is a lot of plastic that touches the bottom so I printed it with a brim to help reduce warping. Hopefully this will be useful to others.