Shelf brackets were multiple times the price of printing my own, plus these have a nicer shape in my opinion. Its up to you to pick a strong filament, print settings and secure to the wall.If your cats are CHONKERS this is not a good idea. I printed with a 0.8mm nozzle, but nozzle size should only affect time. Adding carpet helps to keep your kitties from falling off. I used E6000 adhesive and some screws to secure the carpet to the shelves.
Cat_Shelf_2.STL | 116.2KB |