Brackets and mounts
Enclosure Bottom Closing Lid Kit (M3)
- Bounding box
- 90.0 × 60.0 × 32.0 mm
- Engine
- Precision B-rep
- Parameters
- 21
- Published
- October 29, 2026
Download
Free to download and use. See the terms.
The prompt
I have uploaded an existing 3D STL model of a height measurement device. The main enclosure is partially designed, but the bottom section is open and needs a closing lid. Analyze the uploaded 3D model and use it as a reference to design a matching bottom closing lid. IMPORTANT REQUIREMENTS: 1. Preserve the existing device body exactly as it is. Do not redesign, modify, or replace the existing enclosure. 2. Generate ONLY the missing bottom closing lid as a separate, editable 3D CAD component. 3. The lid must fit precisely into the open bottom section of the existing enclosure, matching its shape, width, depth, and outer contour. 4. Design the lid with a secure screw-based mounting mechanism: - Add mounting flanges or tabs around the edges of the lid. - Include screw holes in the lid. - Add corresponding screw mounting bosses or threaded holes inside the existing enclosure. - Ensure the screw holes on the lid align perfectly with the mounting points on the enclosure. - Use 4 screws if the available space permits, preferably one near each corner. - Use standard M3 screws with appropriate clearance holes and mounting bosses. - Ensure the screws can be inserted and tightened from the bottom of the device. - The lid must be removable for maintenance. 5. Ensure the lid fits flush with the existing enclosure without gaps, unwanted protrusions, or interference. 6. Include sufficient wall thickness and reinforcement around the screw holes to prevent cracking. 7. Use realistic manufacturing dimensions and suitable clearances for a 3D-printed plastic enclosure. 8. The lid should have a clean, professional industrial design, matching the existing device's appearance. 9. Keep the closing lid as a separate component so it can be independently edited, exported, and manufactured. 10. Generate a complete 3D CAD model of the lid with accurately positioned screw holes and mounting features. Before finalizing, verify that the lid aligns with the existing enclosure and that all screw mounting points are accessible. Output: - Editable 3D CAD model - Separate closing lid component - Screw holes and mounting features - Exportable STEP and STL files
Parameters
| Name | Value | Range |
|---|---|---|
| Enclosure Length (X) | 90 mm | 50 – 180 |
| Enclosure Width (Y) | 60 mm | 35 – 140 |
| Enclosure Height (Z) | 32 mm | 15 – 90 |
| Shell Wall Thickness | 2.5 mm | 1.6 – 4 |
| Outer Corner Radius | 4 mm | 0 – 15 |
| Lid Plate Thickness | 2.9 mm | 1.6 – 5 |
| Lid Fit Clearance (per side) | 0.4 mm | 0.1 – 0.8 |
| Screw Hole Inset From Edge | 9 mm | 6.5 – 30 |
| M3 Clearance Hole Dia | 3.4 mm | 3.2 – 3.8 |
| Underside Counterbore Dia | 6.2 mm | 5.5 – 8 |
| Counterbore Depth | 1.8 mm | 1 – 2.6 |
| Screw Reinforcement Pad Dia | 9 mm | 7 – 14 |
| Rib Width | 1.6 mm | 0.8 – 3 |
| Rib / Pad Height | 1.2 mm | 0.5 – 2.5 |
| Boss Insert OD | 7 mm | 5 – 12 |
| Boss Insert Height | 6 mm | 3 – 12 |
| Boss Pilot / Tap Drill Dia | 2.5 mm | 2.4 – 3.2 |
| Screw Nominal Dia | 3 mm | 2.5 – 4 |
| Button Head Dia | 5.5 mm | 4.5 – 8 |
| Button Head Height | 1.65 mm | 1 – 3 |
| Screw Length (under head) | 8 mm | 6 – 14 |
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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