A cat feeder that replaces the standard food bowl.
From a design standpoint, rather than tie up the printer (and material) by printing the container tube, this one uses a length of standard 4" PVC pipe. The cover is designed for that, too. There's a little section in the OpenSCAD code to change the name on the lid to that of your cat.
The feeder is "automatic" in the sense that the cat can learn to paw the dispense hole a bit to get the food to resume dribbling out if it gets hung up no and then.
Since there's some volume bulk to the design, you can use low infill and still have strength. If concerned, you might boost the vertical wall number to 3. No supports necessary.

Compatible with Purina One and most other small kibble size cat foods.

SparePartsChallenge