Compressed Air Rocket for Quick Couplers

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Description
This small 3D-printed part turns a standard compressed air quick coupler into a fun “air rocket”. Insert it into the coupler and a short burst of compressed air will launch it forward.
Designed for typical industrial quick-connect fittings, the model prints easily and works well with common materials like PLA, PETG or ABS.

The shape is optimized for a snug fit and smooth airflow, while keeping the print simple and fast. Perfect as a fun workshop gadget, demonstration piece, or conversation starter.

Printing tips

• Layer height: 0.2 mm recommended
• Infill: 20–40%
• Material: PETG or ABS recommended for durability
• No supports required

Disclaimer / Safety
Use only with compressed air systems and handle responsibly.
Do not aim at people, animals, or fragile objects.
Use at your own risk — the author assumes no liability for damage or injury.