Creality CR10s Pro Extended fan shroud (40x20mm fan)

thingiverse

This is a re-creation of the stock hotend fan shroud on the Creality CR10s PRO. I found the stock 40x10mm 24v hotend fan pretty loud, but replacing it with a 12v Noctua 40x10mm fan may not provide enough airflow. I wanted to use a Noctua 40x20mm 12v fan instead to give maximum airflow while reducing noise. This thing is a recreation of the stock hotend fan shroud with some additional structures to make the whole thing sturdy and allow for extra fan height. I used four M3x3 brass insert nuts (melted them in) on the right side to fasten the stock parts blower fan, available at Aliexpress. To let the 12-volt fan connect to the 24v power line of the printer, I added a Buck converter to convert from 24v to 12v, and connected it to the printer using a JST connector, purchased on Amazon.de. There are four different STL's included: - CR10s Pro Fan Shroud Stock - Recreation of stock fan shroud - CR10s Pro Fan Shroud extended - Extended shroud for 40x20mm fan - CR10s Pro Fan Shroud extended_Noctua Design - Extended shroud with "Noctua-like" fan guard. - CR10s-PRO text - Text to glue to the fan shroud (optional) I added source f3d files for Fusion360 and generic step files, so feel free to change anything you want using the sources. I have been printing PETG for 20+ hours after swapping the fan, and everything seems fine. No clogs or other temperature issues in the hotend. EDIT 28/08/2019: As Thingiverse website seems unable to render STL files (global issue) I added renderings from Fusion360.