Apply Wave Shape to STEP using original AutoSketch .DXF files

I have two STL files that need to work together for sheet metal fabrication. • File 1 is a simple rectangle already bent into a wave profile that uses four specific radii. • File 2 contains a custom cut-out, but it is currently flat... (Budget: €10 - €20 EUR, Jobs: 3D CAD, 3D Drafting, 3D Modelling, 3D Printing, 3D Rendering, AutoCAD, Blender, CAD/CAM, Fusion 360, Solidworks)