Printer parts

Auxiliary Cooling Fan 3D Models and STL Files

This collection gathers auxiliary cooling fan parts for 3D printing setups, including ducts, mounts, deflectors and replacement blades. You can compare how each design directs air around the toolhead or across the build area. The pages are useful when you want to adapt an existing 3D printer rather than change its main cooling system. Polyzon does not confirm whether models are free, their price, license, official status, affiliation, safety or fitness. Check the current terms at the source.

A Polyzon collection · 48 models from 4 platforms

How this collection is put together

Polyzon assembles this collection from search results on the connected platforms. Repeats and models without a preview are removed, weak matches go to the end, and the rest keeps the search order. Models belong to their authors — check the terms on each model's page.

Selection rules: the Polyzon editorial team · Text updated 2026-10-14

View the collection Show all: 11484 models →
Collection

Start here

All models in this collection

Show all: 11484 models
About the category

«Auxiliary Cooling Fan 3D Models and STL Files»

The results cover several families: ducts and shrouds that channel air from an auxiliary fan, brackets that hold a fan on a gantry or frame, deflectors that angle the airflow, and replacement blades or fan cases. They differ in how they attach, how much space they take around the carriage, and whether they are meant for a single fan or a pair. Some designs focus on part cooling near the nozzle, while others move air across the whole plate.

Before printing, check the dimensions and mounting pattern on the author's page, because a small difference in hole spacing can decide whether a bracket matches your mounting points. Look at the number of parts, the assembly order, and whether the design expects supports or specific fasteners. The material and settings listed by the author are also worth reading, especially for parts that sit close to a hot nozzle or moving axes.

To narrow the collection, combine the main term with the printer series or the fan position, such as side, rear, or gantry. Related searches include part cooling, fan duct, fan shroud, airflow deflector, and fan mount. If you are working on a specific hotend or enclosure, add those words to the query and then check the model photos and dimensions on the source page.

FAQ

Frequently asked questions

What is an auxiliary cooling fan used for in 3D printing?
It adds airflow beyond the main part-cooling fan, often to cool the nozzle area, the heat break, or the printed layer. It can also move air across the build plate or away from the hotend.
How do you choose between a fan duct, a deflector, and a mount?
A duct guides air from the fan to a target area, a deflector changes the direction of existing airflow, and a mount holds the fan in place. The choice depends on where you need air and how much room your carriage has.
What should you check before printing an auxiliary fan part?
Check the mounting holes, overall size, number of parts, and any assembly notes on the author's page. Also review the material and print settings the author lists, and look at photos of printed examples.
Can an auxiliary fan design be adapted for a different printer?
You can often scale or modify a model, but the mounting points and clearance around the carriage must match your machine. Check dimensions first and be ready to adjust the model in CAD.
Related
Printer parts

Cooling Fan Plugs and Ducts: 3D Models

11510 models
Printer parts

3D Models of Fan Shrouds, Ducts and Blanking Plates

155078 models
Printer parts

3D Models of Fans: Cooling, Grills and Covers

357115 models
Printer parts

Fan Housing STL Models for 3D Printing

211306 models
Vehicles

Motorcycle Cooling 3D Models and STL Parts

2433 models
Printer parts

Ender 3 Fan Ducts, Guards and Covers STL

13227 models

All 3D model categories

The full catalog of topics — from home & household to CNC, searchable across the connected sources.

Open the category catalog