Blower Fan Mount / Shroud for Printrbot Simple Metal

thingiverse

I upgraded to a 50x15 blower part cooling fan, and tried to use the [official Printrbot blower fan shroud](https://www.youmagine.com/designs/printrbot-blower-fan-mounts), but did not like how it blew straight at the hotend top, which made my hotend not able to keep a stable temperature when the heat bed was heating. I took the Printrbot version and added a downslope, and also tweaked the mount to work better with the 50x15 blower fan that I purchased. The fan shroud was not centered and too low, so I also tweaked to get it more centered and the bottom a little higher. I also added a frame to make it easier to keep the shroud square to the fan output, since there is a little bit of play that messes up the angle. There are three different shrouds - the difference is how much curve there is for the top of the output, to give more or less clearance to the hotend as needed.