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3D Models for 1-1/4 to 32 Fittings and Adapters

This collection gathers STL files for adapting 1-1/4-inch threads to 32 mm hose and pipe connections. It covers threaded reducers, hose tails, and pipe fittings. Use it when you need to compare options for a 3D printer to bridge a size or thread mismatch. 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.

Come è composta questa raccolta

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: 12/10/2026


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«3D Models for 1-1/4 to 32 Fittings and Adapters»

The models in this collection fall into a few practical groups: threaded adapters that change between BSP, NPT, or G threads; barbed couplers and hose tails that grip flexible tubing; and larger pipe fittings for pool, dust collection, or barrel connections. Some are simple single-piece reducers, while others combine a thread, a nut, and a hose barb in one body. The differences matter because thread form, pitch, and sealing method change how the part joins to the next component.

When choosing a model, read the author's page for the stated thread standard, nominal diameter, and whether the part uses a flat gasket, thread tape, or a clamped hose. Look at the wall thickness, the number of parts, and any assembly steps shown in the description. Photos of real prints can show whether the threads came out cleanly and how the adapter sits against the mating part.

To refine the search, try synonyms such as hose adapter, threaded reducer, barbed fitting, pipe coupler, and conversion adapter. Related terms include BSP, NPT, G thread, metric hose, and dust collection or pool plumbing. If the first results are too broad, add the connection type, the thread direction, or the material the author lists.

FAQ

Domande frequenti

What does 1-1/4 to 32 mean in these models?
It usually refers to adapting a 1-1/4-inch thread or hose connection to a 32 mm pipe or hose size. The exact meaning depends on the author's description, so check the thread standard and measured diameter.
How can I check the thread before printing?
Compare the stated thread standard, pitch, and nominal diameter with the mating part. If the page gives only a size, measure the actual thread or hose diameter and allow for print tolerance.
Do these models need supports?
Some threaded adapters print without supports, while others include overhangs or internal channels that may need them. The author's page and photos usually show the orientation and support notes.
What should I check after printing?
Check thread engagement, the hose clamp area, and whether the part seats against the gasket surface. Test with the intended mating part before final assembly.

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