The step that comes with the XL box is a little small, our two cats are diggers and typically fire the litter out the back opening. This new step defiantly reduces the litter escape + gives them something to scratch post business. Additionally eliminates our boy cat standing too far back and firing out onto the floor.
I used PETG. 0.2mm and 15% fill. It has a small lip to catch the edge of the liner. I remove the step before the liner and then insert the liner before step. (our cats are only about 4kg. If much heavier I would probably make 3 perimeters and maybe 25% infill)
Added an improved V2 version. Printed 2 perimeters, 10% fill and seems fine. Offers wider inside liner capture, better litter capture + improved drain for those special occasions…
The author marked this model as their own original creation.