Cat Feeder Base Parametric

Design a parametric 3D model of an automatic cat feeder base, perfectly fitting a 220x220 mm 3D printer bed. The total outer dimensions are 200 mm length, 120 mm width, and 60 mm height. The overall shape is an aerodynamic, smooth teardrop lofted between a 110 mm diameter half-circle at the back and a 90 mm diameter half-circle at the front. Inside this solid body, perform the following operations: 1. From the flat top face at the front, cut a smooth, round cat bowl with a top diameter of 80 mm, a depth of 35 mm, and a 15-degree cone angle tapering inward. Fully fillet the internal bottom edge of the bowl with a 15 mm radius. 2. From the rear flat face, cut a horizontal hollow shaft cylinder with a 32 mm diameter. The centerline of this shaft must run horizontally at a height of 45 mm from the bottom base line, piercing completely forward through the body to create a drop-hole directly into the cat bowl. 3. On the rear outer face, create a Nema 17 stepper motor mounting interface centered on the 32 mm shaft: add a 23 mm diameter circular pocket 2 mm deep for the motor flange, and four 3.4 mm diameter M3 screw clearance holes arranged in a 31x31 mm square pattern. 4. From the absolute bottom face of the base, cut a large internal hollow electronics compartment, leaving solid outer walls of 5 mm thickness everywhere, except around the horizontal shaft. 5. Inside this bottom compartment, add four sets of vertical mounting bosses (pillars) that are 20 mm high, each pillar having a 7 mm outer diameter and a 2.8 mm pre-drill center hole for M3x25mm screws. Set one pair of pillars at a distance of 48.5 mm by 22 mm for ESP32, and another pair at 32 mm by 12 mm for LM2596S. 6. Apply a 5 mm fillet to all top outer edges of the entire model for a smooth, high-end consumer-product look. Output as clean solid STEP geometry.

Parameters

Every value above is a live dimension. Open a model like this in the editor and each one becomes a slider you can drag before exporting.