Printrbot Metal Plus Alternative Fan Shroud

A different approach to the original fan shroud.

3D printer parts and enhancements

Creative Commons Attribution Share Alike

Commercial use is allowed, you must attribute the creator, you may remix this work and the remixed work should be made available under this license.

Learn more or download attribution tags


This is my attempt to make a fan shroud to maximize the airflow from the 40mm fan. I still think the airflow is too forward biased; hopefully further revisions can help make the airflow more even.

I have only used PLA so far. I realize ABS should create a more temperature resistant model. I highly recommend using ABS if you print at temperatures above PLA or remove the shroud all together for higher temperatures. I just started printing ABS ~235C, heated bed 100C and the bottom of the shroud is sagging. Also be careful not to remove the fan while it is running; I read somewhere that can damage your board.

The print gets rough around the top half of the fan mount. I used 0.254mm layer height @ 30mm/s print (70mm/s travel). The tolerances are pretty tight around the nozzle; the parameters are adjustable in the openscad file if you can find them :)

The openscad file is messy. I will be uploading a cleaner copy in the near future.


Added cleaner V1a scad file

V1b has better directional flow but is too restrictive. Added a buffer for the fit by the fan.



Issues are used to track todos, bugs or requests. To get started, you could create an issue.


7b52db6bc8c81d27bdaedd546c262ef3?default=blank&size=40James added this to the PrintrBot Metal Plus Upgrades collection ago
574f1d4ac3fc14bcae7f553eea61503f?default=blank&size=40wuudogg added this to the Printrbot Ugrades collection ago
9bd70ff2ba07ef08a3b988ee148f0f91?default=blank&size=40catfoodman added this to the Printrbot collection ago
758daed9695e35894f4aaa1628e6cfb0?default=blank&size=40yootis added this to the printrbot collection ago
2aae147e968d16482f7ed198ee77e739?default=blank&size=40yellowlogic added this to the printrbot metal plus collection ago
64bc7c431204819339f14800788aaf43?default=blank&size=40AlastairBKA added this to the Printrbot Metal Plus collection ago
2aae147e968d16482f7ed198ee77e739?default=blank&size=40yellowlogic printed this ago
Carousel thumb img 2363
Printed on:
Printrbot Plus Metal
so far so good. I had a little trouble printing because the top portion above the hollow inside didn't have any support. was able to fix myself.
2aae147e968d16482f7ed198ee77e739?default=blank&size=40yellowlogic added this to the Want To Print collection ago
F9131a84fd3e6516df7bead04c0453f5?default=blank&size=40CPUWiz added this to the Printrbot Plus collection ago
B6f4dcd49d8210ea57957e88ba9a19d2?default=blank&size=40Cho934 added this to the PrintrBot objects collection ago
Mini profileChristopher Bray added this to the 3D Printers collection ago
B8e97fc2d6ac42a5385960bbb4850d13?default=blank&size=40Gaetan Karre commented ago

Hi, Thanks for that design, I tried to print it and it fits well. But a little bit close from the hothead. So the piece just melt down while printing.

Do you think you could make a new version with a little more space around the head? With this, the head will not become as hot as this design and will not melt down.

Thanks a lot

Cbdd0edfbd57a0e78bd8c72b3f0479ec?default=blank&size=40BiZaRrO published this design ago