CAD Creation - Crowned Steel Plate -- 2

I need a CAD designer to create a STEP solid model of a crowned steel plate with the exact specifications below.


Project: Create Crowned Steel Plate – STEP Solid

Size & Units

Overall size: 8.000 in (X) × 2.000 in (Z) × 0.250 in (Y)

Units: inches


Geometry Requirements

Bottom face must be perfectly flat at Y = -0.250 in

Top face must be a convex (outward) cylindrical crown

Curvature runs only along the 8-inch length (X direction)

No curvature in the 2-inch width

Radius of curvature: R = 223.2 inches (37.2 ft diameter), exact analytical cylindrical surface

All edges must be sharp (no chamfers or fillets)


Accuracy Checks (please verify)

Sagitta along the 8.000-inch chord = approximately 0.03585 in

Sagitta across a 48 mm chord = approximately 0.0020 in (0.0508 mm)


Deliverables

1. STEP (.step/.stp) solid body

Must be a single manifold solid

Top face must be an exact CYLINDRICAL_SURFACE (no faceting)



2. STL file (high resolution, inches) – optional but appreciated


3. A screenshot showing the radius or a section sketch confirming R = 223.2 inches



Quality Requirements

Model accuracy: ≤ 0.001 in

No gaps or self-intersections

Must import cleanly into Fusion 360, SolidWorks, and Mastercam

Do not use polygonal/mesh surfaces in the STEP file


File Naming

crowned_plate_8x2x0p25_R223p2_outward.step