Soda Bottle Pump Cap

admin | 10.12.2025

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This 3D model is a pump cap designed for 2-liter soda bottles. It allows users to pump air into the bottle to increase pressure, preserving carbonation and preventing the drink from going flat. The model can also serve as a scientific tool for pressurization and depressurization experiments.

Construction Features:

Compatible with standard soda bottle caps.
Easy to assemble using readily available materials.
Allows for multiple pressurizations with a single piston component.

Printing Recommendations:

3D print the cap and piston components.
You'll need a soda bottle cap, a 3/4" drill, and an additional drill bit between 1/4" and 1/8".
Use a piece of balloon material and glue (such as super glue) to create an airtight seal.