CR-10 40mm Stock Hot End Cooling Duct - Sturdy

thingiverse

Edit 2018-01-16: Upon request, an f3d file (fusion 360) was uploaded for remixes. The file is a bit messy due to my lack of expertise in Fusion 360. This is a remix of the [superpotatofudges 40mm Stock Hot End Cooling Duct](https://www.thingiverse.com/thing:2160958). On my CR-10 using [jneilliiis Radial Fan Fang](https://www.thingiverse.com/thing:2237084), the cooling duct and hotend became loose after a couple of prints in my enclosure, possibly due to heat on PLA and the relatively heavy Radial Fan Fang. With the help of [donnyb99s Fusion .step Files](https://www.thingiverse.com/thing:2197329/#files), I redesigned the whole attachment so that fans are mounted directly to the carriage instead of the hotend. It was printed in ABS with supports, and after my first 5-hour print, the hotend sits perfectly firm. The original attachment couldn't be removed from Fusion 360, so it must be cut off with pliers (as shown in the pictures) to screw the hotend directly to the carriage. Unfortunately, donnyb99s .step files had a different carriage than mine, with longer threads that wouldn't fit my CR-10's hotend. To compensate, two washers were used between the hotend and the carriage. The following screws were used: M4 20mm + nut on top 2x M3 10mm + washer on the left side (connection with the carriage) 2x M3 16mm for the hotend Some of the "washers" are copper gaskets, but I used what was available.