Enclosures and housings
Eraser-Style Phone Case
- Bounding box
- 56.4 × 96.4 × 12.7 mm
- Engine
- Precision B-rep
- Parameters
- 18
- Published
- October 4, 2026
Download
Free to download and use. See the terms.
The prompt
Create a 3D-printable phone case for my BLKE AIR Mini 3.0-inch mini phone. The phone is approximately 90 mm long, 50 mm wide, and 8.5 mm thick. The entire outside of the case must look like a chunky rectangular white school eraser, similar to a large classic eraser. Make it thick, oversized, rectangular, and rounded on all four corners with smooth, rounded edges. Do NOT make it look like a normal phone case. Phone fit: Create a hollow internal cavity sized for the phone. The screen side must be open so the entire touchscreen is accessible. Use approximately 0.4–0.5 mm clearance around the phone so it can be inserted and removed. Removal system: Use an internal groove/snap-fit system, NOT a hinge. Add a small groove around the inside edge of the case that securely holds the phone but allows the phone to be pushed/snap-fitted in and pulled back out. Do not put the groove visibly on the outside. Camera: The phone has three black camera lenses in a raised blue/silver camera housing. ONLY the top camera needs an opening. Make one opening that follows the raised blue/silver camera housing around the top camera, so the top camera can see through it. Do NOT make openings for the other two cameras. Do NOT make openings for the flash, microphone, or any other camera components. The black lens itself does not need to be individually shaped—the opening should accommodate the blue/silver raised housing around the top camera. Exterior: Entirely plain white. No text, no “ERASER” label, no logo, no decorations. Add a subtle seam near one end to make the outside resemble a real eraser, like the reference design. 3D printing: Make it a single watertight, manifold, FDM-printable model with no unsupported internal geometry. Use approximately 2.5–3 mm outer walls. Export as STL or 3MF. IMPORTANT: The phone cavity must actually be hollow. Do not generate a solid block. The phone must physically fit inside the case and be removable through the open screen side using the internal groove/snap-fit.
Parameters
| Name | Value | Range |
|---|---|---|
| Phone length | 90 mm | 70 – 120 |
| Phone width | 50 mm | 40 – 70 |
| Phone thickness | 8.5 mm | 6 – 12 |
| Insertion clearance | 0.45 mm | 0.2 – 1 |
| Outer wall thickness | 2.75 mm | 2 – 5 |
| Bottom wall thickness | 2.75 mm | 2 – 5 |
| Outer corner radius | 6 mm | 2 – 15 |
| Outer edge radius | 1.5 mm | 0.2 – 4 |
| Snap lip height | 1 mm | 0.5 – 2 |
| Snap lip radial depth | 0.2 mm | 0 – 1 |
| Camera housing width X | 11 mm | 6 – 20 |
| Camera housing length Y | 13 mm | 6 – 20 |
| Camera distance from top | 12 mm | 5 – 40 |
| Camera X offset | 0 mm | -25 – 25 |
| Camera hole corner radius | 2 mm | 0.5 – 5 |
| Seam groove depth | 0.5 mm | 0.1 – 1 |
| Seam groove width | 0.8 mm | 0.2 – 2 |
| Seam distance from bottom | 15 mm | 5 – 40 |
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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