Universal octagon 3D‑Printed Festival Bottle Cap – Watertight Party Cap Replacement for Spa, Coca‑Cola & More

Elevate your festival experience with this reusable, watertight party cap designed to replace disposable bottle tops at concerts, raves and outdoor events. Compatible with Spa, Coca‑Cola, Chaudfontaine and most standard PET bottles, this 3D‑printable cap keeps your drinks safe, spill‑free and ready to go—so you never lose your cap again.

Key Features & Benefits

Universal Fit: Threads into the necks of Spa, Coca‑Cola, Chaudfontaine and the majority of 28 mm PET bottles.

Watertight Seal: Shouldered internal threads ensure zero leaks, even under pressure—tested in PLA for reliable performance.

Durable & Reusable: Swap out single‑use caps for an eco‑friendly alternative—simply screw on, drink, wash and reuse.

How to use

Assembly: Screw cap onto bottle until snug; to remove, hold bottle and twist cap counter‑clockwise.

Maintenance: Rinse under warm water; avoid high‑heat drying to preserve thread integrity.

Why You’ll Love It
Never lose your cap at high‑energy venues again. Stay hydrated, keep your drink safe from spills and tampering, and reduce festival waste with a single, versatile 3D‑printed accessory.

Design Attribution
Design by IJsklontje (Thingiverse) – licensed for Attribution.