modular frame 3d model

Act as an expert in consumer electronics and 3D printing design. Your task is to create a professional, two-part (base and snap-on lid) protective case for a high-power DIY power bank. The primary design goals are safety, a secure yet serviceable snap-fit mechanism, effective heat dissipation, and optimal user experience. 1. Project Brief: Design a protective enclosure for a custom 100W power bank. The case consists of a base (which holds all components) and a removable lid that securely snaps onto it. The snap-fit connection must be strong enough to prevent accidental opening during use or if dropped, but must allow for non-destructive, tool-free disassembly by an adult applying reasonable force. The design must prioritize safety for the lithium-ion batteries inside. 2. Component Layout & Critical Dimensions: Main PCB: Dimensions: 80mm (L) x 20mm (W) x 14mm (H with components). Port/Button Side: All interfaces are on one 80mm side. From left to right along this side: Two USB-A Ports: Provide two rectang