Enclosures and housings
Snap-Fit Clamshell Case for Status Between 3ANC
- Bounding box
- 169.0 × 44.5 × 18.5 mm
- Engine
- Precision B-rep
- Parameters
- 20
- Published
- November 14, 2026
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The prompt
Design a protective hard shell carrying case for the Status Between 3ANC wireless earbud charging case, to be 3D printed in PLA on an FDM printer. SPECS OF ITEM TO PROTECT: - Charging case (closed): 68mm (L) x 32mm (W) x 30mm (H), rectangular with rounded corners (radius ~4mm), flip-top hinge on the long side. CASE REQUIREMENTS: - Two-piece clamshell design (snap-fit, no screws) OR a slide-in sleeve with open front — choose snap-fit clamshell for best protection. - Internal cavity: 69.5mm x 33.5mm x 31.5mm (add 0.75mm clearance per side over actual item dimensions to account for PLA shrinkage and easy insertion/removal). - Wall thickness: 2.5mm (strong enough for PLA FDM, prints cleanly without supports). - Rounded internal corners to match the case shape (4mm radius). - Snap-fit closure: small interlocking lip/groove (0.5mm overlap) running along the parting line so the two halves click shut securely. - Add 1–2mm foam/rubber gasket channel (optional) along the rim for a silicone liner, or leave tight-tolerance PLA-to-PLA fit if no liner. - Exterior shell can be lightly contoured/ergonomic but keep flat bottom for stability on a table. LANYARD HOLE: - Add a reinforced boss (6mm outer diameter, 2mm wall around the hole) at one corner of the shell. - Through-hole diameter: 4.5mm (fits standard paracord/lanyard cord or a small carabiner loop). - Position: top corner, away from the hinge mechanism of the enclosed case, oriented so the lanyard hangs naturally with the case opening facing up. PRINT SETTINGS (PLA/FDM): - Layer height: 0.2mm - Infill: 20–25% (gyroid or cubic pattern) for impact resistance - Wall loops: 3–4 perimeters for durability - Orientation: print each clamshell half with the open cavity facing up to avoid supports - No supports needed if cavity opening faces print bed's up direction - Consider adding small finger notch/groove (10mm wide, 3mm deep) on one edge for easy opening of the two halves OUTPUT: Provide STL or STEP files for both clamshell halves, with the lanyard hole as a separate reinforced feature on one half only.
Parameters
| Name | Value | Range |
|---|---|---|
| Exploded layout gap | 20 mm | 0 – 100 |
| External length | 74.5 mm | 50 – 120 |
| External width | 38.5 mm | 25 – 80 |
| External height per half | 18 mm | 10 – 40 |
| Wall thickness | 2.5 mm | 1 – 6 |
| Cavity depth per half | 15.75 mm | 5 – 35 |
| Internal corner radius | 4 mm | 1 – 12 |
| External corner radius | 6.5 mm | 1 – 15 |
| Snap overlap / groove depth | 0.5 mm | 0.2 – 2 |
| Snap lip / groove width | 1.2 mm | 0.5 – 3 |
| Gasket channel width | 1.5 mm | 0.5 – 3 |
| Gasket channel depth | 1 mm | 0.3 – 2 |
| Gasket channel inset from rim | 1 mm | 0.5 – 4 |
| Finger notch width | 10 mm | 5 – 30 |
| Finger notch depth | 3 mm | 1 – 8 |
| Finger notch height | 3 mm | 1 – 8 |
| Lanyard boss outer diameter | 8.5 mm | 5 – 20 |
| Lanyard through-hole diameter | 4.5 mm | 2 – 10 |
| Lanyard boss protrusion | 6 mm | 2 – 20 |
| Lanyard boss corner offset | 6 mm | 3 – 30 |
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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