Brackets and mounts
Salt Capsule Dispenser Assembly
- Bounding box
- 24.5 × 24.5 × 139.8 mm
- Engine
- Precision B-rep
- Parameters
- 27
- Published
- September 9, 2026
Download
Free to download and use. See the terms.
The prompt
PROMPT FOR 3D MODEL GENERATION / CAD AI (UPDATED) Role & Task: Act as a Senior Mechanical Engineer and Parametric 3D CAD Expert. Generate a complete design spec and execute a fully fully-commented Python Script for Autodesk Fusion 360 to create a lightweight, one-handed salt capsule dispenser for cycling competitions. The output must result in a fully editable native Fusion 360 parametric design, exportable as an STL file for 3D printing. 1. Functional Specifications & Ergonomics Use Case: Single-handed operation by a cyclist reaching into a rear jersey pocket during high-intensity races. Form Factor: Compact, rounded edges to avoid tearing jersey fabric or causing discomfort against the rider's back. Textured side-grips for gloved or sweaty hands. Capacity: 4 to 8 standard Size 00 capsules (Diameter: 8.5 mm, Length: 23.3 mm). Overall Dimensions Constraint: Inner magazine channel length ~100–120 mm (for stacked layout), maximum outer cross-section ~20 mm x 20 mm. 2. Internal Mechanism & Print-In-Place / Compliant Design 3D-Printed Spring (Compliant Mechanism): Do NOT use metal parts. Design a fully 3D-printable leaf spring or serpentine compliant spring (zigzag/S-shape geometry) integrated into the base/follower to push capsules upward. Wall thickness for the spring element: 1.2 mm – 1.6 mm (optimized for PLA/PETG flexibility without permanent deformation). Dispensing Mechanism (Escapement/Trigger): Top-mounted spring-loaded slide button or push-toggle operated by the thumb. A two-stage gate (escapement) that holds the second capsule in place while releasing only the top single capsule upon pressing. Sweat & Shock Protection: Snug-fitting top flap/gate to prevent moisture from entering and capsules from rattling out over rough terrain. 3. Design for 3D Printing & Fusion 360 Compatibility Target Material: PETG or PLA. Assembly: Modular 2-part or 3-part design (Main Body shell, Integrated Spring+Follower module, Top Slider Cap) saved as separate components/bodies inside Fusion 360. Tolerances: 0.25 mm clearance between all moving/sliding components (slider channel, cap release). Print Orientation: Designed to print vertically or horizontally without external support structures (all overhangs ≤ 45 degrees, bridges ≤ 10 mm). 4. Required Output Format Fusion 360 Python API Script: Generate a fully functional Python script designed to run inside Fusion 360 (Scripts and Add-Ins). The script must build the complete parametric timeline with user parameters (cap_dia = 8.5, cap_len = 23.3, cap_count = 6, wall_thick = 2.0), allowing full manual editing of sketches and features afterwards. STL Export Automation: Include automated API commands at the end of the Python script to export the generated components directly into an STL file format ready for 3D printing slicers.
Parameters
| Name | Value | Range |
|---|---|---|
| Body width | 20 mm | 14 – 30 |
| Body depth | 20 mm | 14 – 30 |
| Body height | 120 mm | 80 – 200 |
| Wall thickness | 2 mm | 1 – 4 |
| Outer corner fillet | 3 mm | 0.5 – 6 |
| Bottom floor thickness | 3 mm | 1 – 8 |
| Grip ridge count per side | 4 count | 0 – 10 |
| Grip ridge depth | 0.8 mm | 0.2 – 2 |
| Grip ridge width | 4 mm | 1 – 8 |
| Grip ridge length | 90 mm | 20 – 115 |
| Capsule diameter | 8.5 mm | 6 – 12 |
| Capsule clearance | 0.25 mm | 0.1 – 1 |
| Leaf spring thickness | 1.5 mm | 0.8 – 2.5 |
| Leaf spring width | 12 mm | 5 – 18 |
| Spring arm length | 5 mm | 2 – 10 |
| Spring turn height | 8 mm | 2 – 15 |
| Follower platform side | 14 mm | 8 – 18 |
| Follower platform thickness | 2 mm | 0.8 – 5 |
| Cap sliding clearance | 0.25 mm | 0.1 – 1 |
| Cap overlap over body | 5 mm | 2 – 12 |
| Cap height above body | 18 mm | 8 – 30 |
| Cap outer fillet | 1.5 mm | 0.25 – 4 |
| Slider button length | 10 mm | 4 – 20 |
| Slider button width | 8 mm | 4 – 16 |
| Slider button height | 3 mm | 1 – 8 |
| Slider travel/recess depth | 1.2 mm | 0.4 – 3 |
| Escapement gate thickness | 1.5 mm | 0.5 – 5 |
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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