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3D Models for Threaded Bottle Caps and 20 L Lids

This collection gathers STL files for caps, covers and adapters that close or convert bottles, from small screw caps to lids for 20 litre containers. It is useful when a container has lost its original closure or when you want to give a bottle a second job in the garden or workshop. Most entries are simple parts that a desktop 3D printer can handle in one short session. Polyzon does not confirm whether models are free, their price, license, official status, affiliation, safety or fitness. Check the current terms at the source.

Il testo di questa raccolta è in inglese; la ricerca funziona in qualsiasi lingua.

Una raccolta di Polyzon · 41 modelli da 3 siti

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Polyzon compone questa raccolta a partire dai risultati di ricerca dei siti collegati. I doppioni e i modelli senza anteprima vengono rimossi, le corrispondenze deboli finiscono in fondo e il resto mantiene l’ordine dei risultati. I modelli appartengono ai rispettivi autori: verifica le condizioni sulla pagina di ciascun modello.

Criteri di selezione a cura della redazione di Polyzon · Testo aggiornato: 14/10/2026

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«3D Models for Threaded Bottle Caps and 20 L Lids»

The models fall into a few groups. There are screw caps and matching necks for common bottle openings, large press-on or threaded covers for 20 litre and 5 gallon containers, and watering caps or funnels that turn a PET bottle into a sprinkler. Other entries act as adapters between two different openings, and a smaller group covers snap-on lids for cans and drink tops.

Before printing, check the thread the author specifies: diameter, pitch and neck standard, since a cap for one bottle often will not turn onto another. Look at whether the part is a single piece or needs an insert, gasket or O-ring to hold liquid, and read the material and layer settings the author lists. Photos of real prints on the model page show how the threads came out and where supports were used.

If the results are thin, try other words for the same object: lid, closure, cover, neck, adapter, spout or pourer. Adding the container type helps, for example jerry can, carboy, demijohn, watering can or soda bottle, and thread designations such as PCO narrow the list further. Related searches include hose adapters, drip irrigation fittings and bottle-top bird feeders.

FAQ

Domande frequenti

What should I measure before printing a cap for a 20 litre bottle?
Measure the outer diameter of the neck, the thread pitch and the height of the threaded section, ideally with calipers. Compare those numbers with the dimensions the author lists on the model page.
How do printed caps keep water from leaking?
Many designs rely on a printed lip that presses against the rim, while others have a groove for an O-ring or a cut gasket. The model page usually states which approach the author used.
Which material is used for bottle caps?
PLA, PETG and ABS all appear in these models. The choice depends on whether the part stays outdoors, holds hot liquid or needs to flex when screwed on, so check the author's notes.
Do these caps need supports?
It depends on the orientation and on overhangs in the thread. Some models print flat without supports, others are shown with them, so look at the print settings and photos on the model page.
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