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Prusa I3 MK3 Extruder Motor Fan Duct

by Industrial_Designed

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The Prusa MK3 is very nice. But so many direct drive extruders get warm and the MK3 gets HOT!!!. 135F at the extruder motor recorded. This is when I couldn’t get accurate small PLA to print without becoming mush in the extruder teeth. I made this fan shroud to do all I could. A heat sink and silent 40mm Noctura fan added to the extruder motor along with a 25mm Fan (LOUD) to cool the filament and Bondtech directly. All the “exhaust” heat flows out away from the print surface to help hold the temp

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