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Fan Duct for Raise3D N2 Dual Extruder Used As Single Extruder

by OldRick, published

Fan Duct for Raise3D N2 Dual Extruder Used As Single Extruder by OldRick Aug 26, 2017
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Summary

I have a dual-extruder N2, and have little interest in using the second extruder (I wish I had bought a single-extruder).
This is an improved right-side fan duct for much better part cooling when only the left extruder is to be used.
It directs All of the air from the right-side OEM 35mm fan onto the part, instead of wasting 3/4 of the airflow on cooling an unused heater. By moving one connector on the printhead, you can also program the fan speed in your slicer for perfect cooling.
Note that it requires removal of the right nozzle and that clearances are tight. I moved the washers from outside the fan, to the left, inside the duct, to clear the cooling fins.

Print Settings

Printer:

Raise3D N2

Rafts:

Yes

Supports:

Yes

Infill:

20%


Notes:

I printed it in PolyPC polycarbonate in .1mm layers, with glass/gluestick bed at 110 and extruder at 264.

How I Designed This

I hacked this from the Raise3D stls, using Tinkercad.
While I was at it, I scaled a matching left-side fan-duct to the same height as the final injection-molded piece used by Raise3D - about 3mm taller than the Kickstarter version.
Both ducts are included here.

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this duct is 35mm, it does not fit 40mm fans.

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