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I have an almost-finished **toy playset** model in Blender (.blend). This is a **3D printing / prototype model**, not tooling or final production CAD. The main structure and proportions are already completed. I need help with a few **small mechanical details only**: - Add a **simple spiral / screw (thread)** so compartments can be interchangeable - Add **simple holes/slots** (reference provided) - Add **small rims / edge reinforcement** to certain areas to strengthen the structure - Keep wall thickness consistent (2.2mm) All design details and references are provided. This should be a **quick cleanup / detailing task**, not a redesign. Preferred turnaround: **within 24 hours** Blender experience required.