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Minimalist Bottle Coupler (Eco-Funnel)
I've always looked for a funnel to help recycle PET bottles for storing natural juices, but I found that most existing models were a waste of time, energy, and filament.
I decided to design the simplest. This model connects two bottles, allowing you to use a cut bottle as a stable funnel for easy liquid transfer.
Fast print: Saves time and energy.
Low waste: Uses minimal filament.
Functional: Perfect for reusing bottles.
Pet bottle funnel
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