C-Shaped Open Torque Collar (Flared Ends)

Create a true 3D solid C-shaped open torque collar, not a flat 2D C-shaped sketch or a flat extruded plate. Use millimeters for all dimensions. Design requirements: 1. Inner diameter: 140 mm. 2. Maximum band width at the center: 35 mm. 3. Band width at both open ends: 8 mm. 4. Uniform material thickness: 1.2 mm, measured normal to the curved band surface. 5. Minimum clear distance between the two open ends at the rear: 60 mm. 6. Both ends flare outward at approximately 31 degrees relative to the vertical direction. Treat this as a provisional parameter that must be verified. 7. The collar must have a genuine three-dimensional curved shape that wraps around the neck. The band must follow a curved path in 3D, not lie entirely in one plane. 8. The inner and outer surfaces must be curved, with the thickness maintained uniformly along the surface normal. 9. The band width must transition smoothly from 35 mm at the center to 8 mm at both ends. 10. Both ends must be rounded and smooth, with no sharp corners. 11. Create one continuous, watertight solid body with a real CAD boundary representation, suitable for exporting as STEP. 12. Preserve the open C-shaped gap. Do not close the collar into a complete ring. 13. Make all major dimensions editable parameters. Before generating, prioritize the 3D curvature, correct opening, variable band width, and uniform thickness. Show the model in an isometric 3D view and expose the key dimensions for verification.

Parameters

Every value above is a live dimension. Open a model like this in the editor and each one becomes a slider you can drag before exporting.