printrbot jr v2 cooling fan duct -- revised

Based on This one has significantly more airflow

3D printer parts and enhancements

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I added a knockoff of to straighten out the airflow, and then made three separate ducts to feed air out around the hot end instead of one big duct with three spaced holes. There's enough flow that I may have to kick my hot-end temperature up a big, and no back-breeze on the other side of the fan, as there was for the earlier version.

I was lazy with the Openscad, so you'll have to trim the screw holes and the duct openings to make it fit. It would be relatively easy to modify the code with some difference operations around the outside and at the tips of the ducts.

Materials and methods

- socket-head cap screws M3
- openscad recent version (with offsets)
- fan mount library from



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2aae147e968d16482f7ed198ee77e739?default=blank&size=40yellowlogic added this to the printrbot metal plus collection ago
Mini lunamoth4rp10007 published this design ago