Brackets and mounts
M3 Bottom Closing Lid
- Bounding box
- 80.0 × 50.0 × 7.0 mm
- Engine
- Precision B-rep
- Parameters
- 14
- 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 |
|---|---|---|
| Lid Width | 80 mm | 40 – 150 |
| Lid Depth | 50 mm | 30 – 120 |
| Lid Thickness | 3 mm | 2 – 8 |
| Corner Radius | 5 mm | 1 – 15 |
| Locating Lip Inset | 1.5 mm | 0.5 – 4 |
| Locating Lip Wall | 2 mm | 1 – 5 |
| Locating Lip Height | 3 mm | 1 – 8 |
| Screw Inset X | 8 mm | 5 – 15 |
| Screw Inset Y | 8 mm | 5 – 15 |
| M3 Clearance Hole Diameter | 3.4 mm | 2.5 – 5 |
| Counterbore Diameter | 6 mm | 4 – 10 |
| Counterbore Depth | 1.8 mm | 0.5 – 4 |
| Reinforcement Boss Diameter | 7 mm | 5 – 12 |
| Reinforcement Boss Height | 4 mm | 0 – 12 |
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.
More models
Browse the full gallery →Trumpet Lyre Mount Main Body
A single 3D mechanical CAD part for a trumpet music lyre mount (Main Body with Paddle). Geometry details: 1. A 18mm-wide semi-cylindrical clamp arc for a 28mm diameter cylinder, w
UAV Ogive Nose Cone
Design a watertight, 3D-printable aerodynamic nose cone module for a fixed-wing tactical UAV, optimized for printing in Carbon Fiber Filled PETG (PETG-CF). The base of the nose con
Flat-Strap Reel Spool
Create a 3D model of a custom flat-strap reel spool for a home plate housing cavity. Geometry: - A reel spool consisting of two parallel circular outer flanges connected by a cent
PET Recycling Kiosk Frame
Design a production-ready welded steel frame for an outdoor PET bottle recycling and animal feeding kiosk. Create ONLY the steel frame. Do not create covers, motors, tanks, electr
Kugoo G2 Pro Rear Swingarm for KuKirin G4
Create a detailed 1:1 CAD drawing of custom rear swingarms for the Kugoo G2 Pro 2020 electric scooter. The swingarms must be designed to fit a KuKirin G4 hub motor instead of the o
Humanoid Robot Exploded Assembly
Design a 3D CAD model of a fully autonomous humanoid biped robot for the Robofest AI HOMO BOT competition. Dimensions Height: 800 mm (80 cm) Maximum weight: 20 kg Lightweight modu