I am making this dog feeder.
My goal is to 3D print it using an Ender 3 V2. I am using Cura to slice it.
When I slice it, though, Cura does not see the Top part (Dispenser box) as a solid piece. And when I am slicing it, it does not create an infill for the ramp. I have tried using the infill support option and setting the infill overhang angle to 0, but it still does not create infill support on the ramp. Here are some prints:
Notice that there is no infill under the ramp.
How do I make Cura understand that this is a solid piece?