3D CAD Modeling & Nested 2D .DXF Sheet Metal Export for an 8-Faceted Polyhedral Hopper Basin (0.9mm Stainless Steel)

We require a high-precision, production-ready 3D CAD assembly model and nested 2D sheet metal fabrication flat-pattern vector export (.DXF format) for a modular, 8-faceted solar concentrator basin (inverted octagonal truncated pyramid)... (Budget: $10 - $30 USD, Jobs: 2D Drafting, 3D CAD, 3D Design, 3D Modelling, AutoCAD, CAD / SolidWorks, CAD Drafting Review, CAD/CAM, Fusion 360, Solidworks)