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UP! extruder modification 3, cooling

by DrewPetitclerc

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3D afinia extruder model mount part stepper UP upgrade useful

I added a cooling air jet directly to extruder gear assembly to prevent softening of PLA filament too soon, PLA is worst case (heat is transferred from motor and extruder hot block) this will hopefully apply to new main board upgrade where stepper motors run at even higher temperatures.

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