Kingroon KP3S cooling system complete + BL touch holder

Cooling system for Kingroon KP3S printer with two 40mm fans.
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updated April 10, 2025

Description

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To improve the cooling system, I designed a custom setup for two 40 mm fans. Assembly is very simple – you only need to attach the air diffuser to the print head at two points. Everything else is just a matter of easy connections.

I'm using a combination of these two fans:

Hotend fan
https://www.aliexpress.com/item/1005003522640375.html?spm=a2g0o.order_list.order_list_main.24.378318021rMbqc

Extruder fan
https://www.aliexpress.com/item/1005007548544972.html?spm=a2g0o.order_list.order_list_main.36.378318021rMbqc

The design was inspired by this model:
https://www.thingiverse.com/thing:4942470

The holder for the level sensor is attached to the right side of the print head body.

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The author marked this model as their own original creation.

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