Wellness Puck — Bottom Shell

Design a manufacturable two-piece enclosure for a premium bedside wellness device shaped like a modern hockey puck. Overall dimensions should be 92 mm diameter × 30 mm height with a minimalist, Apple-inspired aesthetic. The enclosure should have smooth surfaces, generous fillets, no sharp edges, no decorative grooves, and be optimized for future injection molding while remaining printable in PLA. The top surface should feature a large frosted translucent diffuser covering approximately 80% of the top surface with a nearly flush fit and a shallow 0.5–1 mm recessed lip. The diffuser should evenly distribute light from an internal LED ring while preventing visible hotspots and minimizing light leakage. Include two flush circular side buttons. One 9 mm power/start button and one slightly smaller audio enable/disable button positioned nearby. Integrate a recessed USB-C charging port centered on one side with reinforced mounting. Design the enclosure as a top shell and bottom shell secured with hidden screws from the underside. Use 2–2.5 mm wall thickness, proper draft angles, structural ribs, screw bosses, PCB standoffs, cable routing channels, battery retention features, and realistic assembly tolerances. Reserve internal space for: * Rechargeable lithium battery * Main PCB * LED ring beneath diffuser * Temperature sensor * Small buzzer/speaker * USB-C charging board Position the battery away from the temperature sensor. Add discreet ventilation slots near the temperature sensor for accurate ambient air measurement while keeping them visually hidden. Include concealed sound vents integrated into the underside or lower side wall. The bottom should be flat with four small rubber feet, a slightly recessed center area for stability, and a clean professional appearance. The final design should feel calm, premium, elegant, trustworthy, and suitable for a modern bedroom. It should resemble a mass-produced consumer electronics product with realistic engineering features ready for future manufacturing.

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