This is a replacement hotend fan shroud that significantly increases layer cooling for cleaner printing with PLA, PETG and any other filaments that benefit from extra cooling.
My original goal was to implement a shroud design that allowed for symmetrical cooling from both sides of the nozzle. Due to space and weight considerations of the compact hot end/cantilevered X axis and the inability of 40mm fans to generate much air pressure I have arrived at this design at least for the interim. This is still very much an active project, so please test and comment. Future versions will explore dual fan and cage fan options.
Here are two fans I would reccomend. The 40x20 version is fairly loud but very effective:
Ran through STL repair for potential S3D issue. Default orientation is now the simplest way to print, no support required.