Hexagon Hot End fan duct
thingiverse
To install this adapter, position it with precision atop a 20x20 fan, directly on a hexagon hotend purchased from ReprapDiscount. Print this component in ABS for maximum heat resistance. High infill settings are also required to maintain structural integrity – a density of at least 80% will prevent layers from splitting. Insert the duct by carefully aligning its top face with the 16 mm diameter, beginning from the hexagonal side that tops the assembly.
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