
3D Printing Adapters: STL Models for Conversions
Adapters join two things that were never meant to fit: hoses, spools, mounts, toys and camera gear. This collection gathers STL files for such conversions across many sizes and systems. It is useful when a replacement part is hard to find or when two devices from different makers have to meet. Polyzon does not confirm whether models are free, their price, license, official status, affiliation, safety or fitness. Check the current terms at the source.
Le texte de cette collection est rédigé en anglais ; la recherche, elle, fonctionne dans toutes les langues.
Comment cette collection est composée
Polyzon compose cette collection à partir des résultats de recherche des plateformes connectées. Les doublons et les modèles sans aperçu sont retirés, les correspondances faibles sont placées à la fin, et le reste suit l’ordre de la recherche. Les modèles appartiennent à leurs auteurs : consultez les conditions sur la page de chaque modèle.
Règles de sélection : la rédaction de Polyzon · Texte mis à jour le 13/10/2026
Par où commencer
Tous les modèles de cette collection

Airbrush adapters

Wooden train (Brio, IKEA...) to Duplo adapters (minimal material design)

Adapter for small spools. AMS.

CNC vacuum mount and adapters

Gridfinity Adapters

Window Vent (through locked window)

Filament Spool Holder & Adapters

Bambu Lab Printer X-Y Squareness Check Adapters

Gardena Compatible Female Quick Connect

Macro lens adapters for Nikon F-mount

Bambu Lab X1 - Anti-vibration Feet Adapters

Vacuum hose adapters for all common sizes
AA to C Battery Adapters/Spacers

RYOBI 40V Pass-Thru Charging Adapters

Drehverschluss Adapter Schlauch Mobile Klimaanlage

Wall Support For Outlet Line

Apple Vision Pro - Solo Knit Band Adapters for Meta Quest 3 (Version 4.0)

filament spool Adapter

Sim adapters

Creality CFS Slim Carboard Spool Adapters w/ Desiccant Holder and RFID Tag plate

Gardena quick connector set

AA Battery Adapters

Quest 3 Gunstock adapters for Sanlaki gunstock

Universal Mini Spool Adapter 250g 650g Ø50mm-60mm

SUP-Pump Adapters

Prusa Mini Copperhead™ Hotend Adapters

Sunlu 250g Small Spool Adapter

Festool Adapters

OpenRC F1 Car 1:10 Standard Wheel Adapters

AMS Adapter for SUNLU small 250g new spools
GuerillaBeam SLR lens adapters

PET BOTTLE TINY FUNNEL ADAPTERS

Sunlu to Bambu Spool Adapter for Refil
"STEALTH" STOCK ADAPTERS

Quest 3 - Deluxe audio strap adapters.

250g Spool Adapter (Sunlu)

Sim adapters (mini, micro, nano)

Gridfinity for USB-power adapters (adaptable)

Sanding Adapter Oral-B Electric Toothbrush 25mm

Camera filter adapters

Macro lens adapters for Nikon F-mount

SpoolBridge-Go from Cardboard Spool to Refill

Flexible Coolant Pipe Adapters

3.5" to 2.5" adapters

A1 Mini Second Spool Holder With Optional Handle
«3D Printing Adapters: STL Models for Conversions»
The models fall into a few groups. Hose and vacuum adapters change one diameter or thread into another, while spool adapters alter hub size or holder geometry so a reel sits correctly on a machine. Toy converters let one building system click into another, and mount or connector pieces link tools, chargers and quick-connect fittings. Optical adapters are the most dimension-sensitive, since they depend on thread pitch and flange distance.
Before printing, measure both mating sides: inner and outer diameter, thread pitch, wall thickness and the depth of any socket. On the author's model page, look at the number of parts, whether supports are needed, the material and settings listed, and photos of real prints. Small clearances decide whether a part slides on or jams, so a short test piece is often worth the time.
Search results improve with synonyms. Try converter, reducer, coupler, bushing, spacer or mount instead of adapter alone, and add the thing being joined, such as hose, spool holder, quick connect or lens mount. Related topics like battery spacers, vent inserts and printer feet often hide the same kind of part under a different name.
Questions fréquentes
How can I tell whether an adapter will fit my parts?
Do these parts need supports?
Which material should I use for an adapter?
Can I just scale an adapter in the slicer?
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