Smart Straw Bottle Lid System

A redesigned straw bottle lid system focused on leak prevention, reliable sealing, and manufacturable geometry.

Gallery

A collection of snapshots from CAD design, prototyping & Real product

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Starting Point

The project started with an existing bottle lid design that suffered from leakage, unclear internal geometry, and unreliable sealing behavior.

The client needed:

• A lid that would not leak when inverted

• A reliable straw and valve system

• Compatibility with an existing universal bottle thread

• A design that could be prototyped and tested quickly

Initial reference parts were available, but the internal geometry and sealing details were difficult to measure and reproduce accurately.

My Contribution

I reverse-engineered the lid system and rebuilt it as a clean, parametric, and manufacturable design.

My contribution included:

• Reverse engineering complex internal geometry from physical parts and scans

• Redesigning the straw, valve, and gasket interfaces for reliable sealing

• Refining spout rotation and sealing behavior

• Defining correct thread geometry and tolerances

• Optimizing all components for prototyping and future manufacturing

• Iterating based on real-world testing and client feedback

Final Outcome

The final design resulted in a leak-resistant straw lid system that performs reliably under real use conditions.

The solution:

• Prevents leakage even when the bottle is inverted

• Maintains smooth and intuitive spout operation

• Uses clean, manufacturable geometry

• Is suitable for both prototyping and mass production

Proof & Status

✔ Fully detailed SolidWorks assembly

✔ Reverse-engineered from real parts

✔ Prototype-tested using SLA and FDM prints

✔ Client-approved design

✔ Production-ready geometry

Stress Analysis Validation Study

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