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Simple Print cooler 3D Printer File Image 1
Simple Print cooler 3D Printer File Image 2
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Simple Print cooler

bampi2k avatarbampi2k

May 12, 2025

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Description

There are a lot of part cooler designs out there but most I came across were with some major cyclic shortcomings. Like:

  1. Some are brilliant/effective designs but they are complicated and need cooling and supports to prints.
  2. Others are simple to print but ineffective in cooling the part from all directions. (or end up de-stabilizing the hotend PIDs by blowing air into the nozzle)

I set out to correct it for my own use and found this design to be extremely effective and hence posting it back to the community

This is a simple part cooling duct. Attention is paid to:

  1. make it easy to print without support or cooling enabled.
  2. Easy to assemble and mount without complicated dependencies.
  3. Very effective part-cooling
  4. Avoid blowing air onto the hotend (nozzle/heater-block)

The part is printed as 3 sub-parts.

Print Settings

Printer:

Prusa i3 (clone)

Rafts:

No

**Supports:**

Yes

Resolution:

0.1mm

**Infill:**

10-20%


Notes:

Printed in PLA. Could be done in PETG / PC / ABS
You can print without supports. But it is good to print with supports.

Post-Printing

Assembly

Glue the parts with CA (use a CA-kicker if required) using the photos as reference.
I would also suggest running a thin layer of CA on the outside of the model.

Refer to the photographs for mounting ideas. make sure that the printed part has at least 1-1.5mm gap from the heater block and the nozzle is approximately centered in the print-cooler duct recess. The part can touch the insulation for the heater-block(I do not use insulation on my heater block).

Usage =====

Printing Parts

Make sure you use a M106 (run print-cooler at full speed) gcode in the printer 'beginning gcode' settings. Place it before you start pre-heating the hotend.
If you have very long printing time for the first layer (greater than 3-4mins) I suggest that you keep the cooler fan on @ 10-20% (min running speed)

This design gives excellent print quality for overhangs and bridges (at least for PLA). Some example photos are given i this post.

Category: 3D Printer Accessories

License:

Creative Commons — Attribution — Noncommercial

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