Enclosures and housings
doTERRA 15mL Cap Tightener - 1/4in Hex Drive
- Bounding box
- 38 × 34.4 × 57.3 mm
- Engine
- 3D Printing B-rep
- Parameters
- 13
- Published
- November 13, 2026
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Free to download and use. See the terms.
The prompt
Design a 3D-printable bottle cap tightening attachment for doTERRA 15 mL essential oil bottles. The component must feature: - A 1/4-inch hexagonal drive shank compatible with a power drill. - A reinforced cylindrical main body. - A smooth structural transition between the shank and the cap housing. - A cylindrical bottom cavity sized to fit the actual bottle cap dimensions. - Internal longitudinal gripping ribs to improve rotational force transmission. - A chamfered cavity entrance for easy cap engagement. - An internal depth stop. - External longitudinal reinforcement ribs. - Rounded transitions to minimize stress concentration. - Geometry optimized for FDM printing using PLA filament. - Parametric dimensions allowing adjustment of the internal diameter, cavity depth, and gripping features. Prioritize structural strength, cap engagement, torque transmission, manufacturability, and ease of use. Provide a parametric CAD model and an STL file suitable for 3D printing.
Parameters
| Name | Value | Range |
|---|---|---|
| Bottle cap outer diameter | 24.8 mm | 18 – 34 |
| Radial clearance, cap to cavity wall | 0.35 mm | 0.1 – 1.2 |
| Cap insertion depth | 17 mm | 8 – 32 |
| Internal longitudinal rib count | 12 mm | 3 – 24 |
| Internal rib width | 1.6 mm | 0.8 – 3.5 |
| Internal rib protrusion into cavity | 0.45 mm | 0.1 – 1.5 |
| Main body outer diameter | 34 mm | 26 – 60 |
| Solid material above the depth stop | 9 mm | 5 – 30 |
| External reinforcement rib count | 6 mm | 0 – 12 |
| External rib width | 3 mm | 1 – 8 |
| External rib protrusion | 2 mm | 0.5 – 6 |
| Hex across flats, 1/4in = 6.35 | 6.35 mm | 4 – 12 |
| Hex shank length | 16 mm | 8 – 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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