Ender 3 DD-Compatible 5015 Fan Duct

thingiverse

I remixed this fan duct from Ninestar's remix in order to make it fit my printermods.com v1.3 direct drive kit and microswiss hot end. I removed a few mm off the top, moved the duct outlets down 3 mm, and moved the screw holes 1.5 mm to the right for proper alignment. I also added more room above the inner screw to make installation easier. That last modification caused Endli's bltouch holder to no longer fit, so I included a remix of his design that fits properly. Note that the stl I included is slightly different than the one pictured above. The perspective makes it look like the probe is lower than the nozzle, but in reality it's like 2 mm above the nozzle. The one pictured works just fine, but in the version I uploaded I moved the probe up by 1 mm. Your x and y offsets should be about -51 and -10.9, respectively. For the z offset, I would start at 3 mm and work your way down. While I was at it, I also modified the duct to accept a single 5015 fan. The inlet is purposefully tight to seal properly. I recommend getting the bottom screw started, then you can push down and screw in the top screw. I included a CFD study I did to verify that each half of the duct gets the same amount of flow (they're within 2%) because it looks cool.