Hey! This thing is still a Work in Progress. Files, instructions, and other stuff might change!

Air cooling system for hot-end

by fma, published

Air cooling system for hot-end by fma Dec 13, 2012
0 Share
Download All Files

Thing Apps Enabled

Order This Printed View All Apps



Use This Project

Give a Shout Out

If you print this Thing and display it in public proudly give attribution by printing and displaying this tag.

Print Thing Tag

Thing Statistics

9573Views 1098Downloads Found in 3D Printer Accessories


This is a new kind of cooling system for hot-ends, based on a little air pump.

The ring is designed for a ORD Bot Hadron, but can be adapted for other 3D printers.



  • 1x ring
  • 3x tube clips
  • 1x tube split

You need:

  • 3x M2.5x12 screws + nuts
  • 1x air pump (one of these little things for aquarium)
  • 3x50mm brass tube (ext. D 4mm)
  • flexible tube (ext. D 6mm, int. D 4mm)
  • 3x 5mm leds (opt.)

I didn't make tests, as I'm waiting for my new hot-end (sold the previous one with my first 3D printer, a nice Prusa, replaced by a ORD Bot Hadron), but I tried by maintaining the tube from the air pump by hand, and it seems to work fine.

My pump says it can reach 100l/min when the tube is 45cm below the surface of the water. Don't know yet if it is enough for printing at high speed. I plan to design a custom centrifugal pump, like this cute one: http://www.thingiverse.com/thing:4839. Another way to go is to use a little compressor, but this will need a pressure regulator!

The ring has 3 holes for leds.

More from 3D Printer Accessories

view more

All Apps

3D Print your file with 3D Hubs, the world’s largest online marketplace for 3D printing services.

App Info Launch App

This App connects Thingiverse with Makeprintable, a cloud-based mesh repair service that analyzes, validates and repairs most common mesh errors that can occur when preparing a 3D design file for p...

App Info Launch App

Kiri:Moto is an integrated cloud-based slicer and tool-path generator for 3D Printing, CAM / CNC and Laser cutting. *** 3D printing mode provides model slicing and GCode output using built-in...

App Info Launch App
KiriMoto Thing App

With 3D Slash, you can edit 3d models like a stonecutter. A unique interface: as fun as a building game! The perfect tool for non-designers and children to create in 3D.

App Info Launch App

how well is it working and which kind of pump do you use? is a electric membrane pump for fish tanks sufficient?

fma - in reply to wthlee

As I changed all my carriage, I never really used that system (it broke quickly, because of too small parts).
But I'm working on the next release, for my new hardware. Hope to post something in a few days.
The pump is a membrane pump, and is really enough; I even have to pinch the tube to limit the flow! Having the air flow very close to the nozzle output requires very little air.