Enclosures and housings
Automotive bracket with central cavity
- Bounding box
- 75.5 × 35.0 × 74.0 mm
- Engine
- Precision B-rep
- Parameters
- 15
- Published
- November 4, 2026
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The prompt
Create a precise 3D mechanical CAD model of the automotive part shown in the attached reference drawing. IMPORTANT: The three drawings represent different views of ONE single part, not separate objects. UNITS: Millimeters (mm). KNOWN DIMENSIONS: Side view: - Overall length: 75.5 mm - Overall height: approximately 74 mm - Vertical section: approximately 55 mm - Internal dimension: 52 mm - Lower section: 34 mm - Small upper detail: 5 mm Opposite side view: - Height: 39 mm - Internal dimension: approximately 23 mm Bottom view: - Upper width: 33 mm - Main width: 35 mm - Additional dimension: 22.5 mm - Lower section height: approximately 31 mm Other previously measured dimensions: 68 mm and 4 mm. Their exact positions are not confirmed. GEOMETRY: The part has an irregular mechanical profile, curved transitions, inclined surfaces, an upper central concavity, raised edges and a variable-width base. Use all three reference views together to reconstruct one coherent solid. MODELING REQUIREMENTS: 1. Build the main side profile. 2. Reconstruct the opposite profile. 3. Use the bottom view to define the width and base geometry. 4. Combine the profiles using extrusion, loft or other appropriate CAD operations. 5. Preserve curved transitions and irregular contours. 6. Do not simplify the part into a rectangular block. 7. Do not invent unknown dimensions. Use editable parameters for missing measurements. DELIVERABLE: Generate a solid, editable 3D CAD model and export it as STEP (.step/.stp), compatible with Onshape. Also provide isometric, front, side and top previews. Prioritize dimensional accuracy and matching the reference drawings over visual appearance.
Parameters
| Name | Value | Range |
|---|---|---|
| Overall length | 75.5 mm | 70 – 80 |
| Overall height | 74 mm | 68 – 80 |
| Vertical section height | 55 mm | 40 – 60 |
| Internal dimension (side view) | 52 mm | 40 – 60 |
| Lower section height (side view) | 34 mm | 25 – 40 |
| Small upper detail | 5 mm | 2 – 10 |
| Opposite side view height | 39 mm | 30 – 45 |
| Opposite side internal dimension | 23 mm | 15 – 30 |
| Bottom view upper width | 33 mm | 25 – 35 |
| Main width | 35 mm | 30 – 40 |
| Additional dimension (first hole X) | 22.5 mm | 10 – 40 |
| Lower section height (bottom view) | 31 mm | 20 – 40 |
| Unconfirmed 68 mm (second hole X) | 68 mm | 50 – 75 |
| Unconfirmed 4 mm (hole diameter) | 4 mm | 2 – 8 |
| Fillet radius | 1 mm | 0.2 – 2 |
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.
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