Extruder motor cooler using print/layer/front fan MK3S

prusaprinters

<p>From the original design, I just added two screw holders for the print fan to mount on top (not pretty but it works). I removed the FS cover (from the original design) to quickly mount and dismount it. So when I need to print strong ABS parts in a heated enclosure (I don't need the part cooling fan on those cases), I just unscrew the print fan, add this fan holder and screw the print fan on it.&nbsp;</p><p>INSTRUCTIONS:</p><ul><li>Print it with default profiles, no supports on ASA/ABS/PC.</li><li>Remove the textil sleeve, and extend the layer fan cable about 4 cm.</li><li>Add two square nuts (from the spare bag)</li><li>I recommend to add some silicone to the nuts and to the cable holder.</li><li>Activate “KEEP FAN ALWAYS ON” and set fan speed you want.</li><li>To reduce the E motor temperature even more, I recommend to add the following code at the START G-CODE (it will reduce the E motor current): M907 E410</li><li>See pictures</li></ul><p>UPDATE:</p><ul><li>I improved the attachment to the engine.</li></ul>