E3d v6 fan mount by Elektrobomb

Last crawled date: 3 years ago

This is a thin and sleek fan mount for the e3d v6. I designed this for my kossel as it required a part cooling fan that was able to fit in between the effector and the tip of the hotend. I also wanted it to be as small on the xy plane as possible to increase my effective build area on the corners and wanted two part cooling nozzles to provide an equal and opposite airflow to prevent part movement / warping due to single sided airflow. With this in mind I designed this fan duct that uses two 35mm radial fans part cooling fans as they are very small while still providing very high static pressure and then i decided to use the injection moulded axial fan holder that comes with the e3d v6 as this would provide a very tight fit that i knew would hold and that everyone who has an e3d v6 would have. This is what i came up with after a lot of testing on my kossel (seriously, i have about 20 versions of this sitting on my desk). The two part cooling fans provide a very nice balance of pressure and airflow and are directed to a point about 0.5mm below the tip of the nozzle which seems to give some brilliant overhang and bridging performance.
To print, print it in the same orientation as it is supplied in the file (circular cutout side face down) at whatever layerheight you want (i used 0.15mm) preferably using a mildly heat resistant material such as PETG (what i used) or ABS as the ducts are about 6.5mm from the hotend.
It uses a single 30mm axial fan, the injection moulded axial mounting that came with the e3d v6 and two 35*10mm radial fans. The radial fans are hard to get hold of and the only place i have found that sells them in lots of less than 1000 is this: http://www.ebay.co.uk/itm/122121951379?_trksid=p2057872.m2749.l2649&ssPageName=STRK%3AMEBIDX%3AIT
To use, screw the axial fan into the single 30mm mounting slot and then screw these screws through the fan mount and into the injection mounted holder that came with your e3d so that the printed fan holder is sandwiched in between the two. You should then screw the two radial blowers to the sides with the blower facing down using 1.4m * 4mm pan head bolts (1.4mm diameter that is, they look like glasses screws). The fan mount should simply clip onto the heatsink for the e3d v6. The two radial fans are 5v so you need to wire them in series with both each other and a 3.3 ohm resistor to connect them to a 12v part cooling fan outlet. It's a bit of work to get everything exactly right but it is by far the best cooling fan i have ever used on my prints and i spent quite a lot of time getting the airflow angle exactly right so that it blows exactly across the nozzle. It is also so compact that it should fit on nearly any e3d v6 setup that the standard injection moulded fan shroud fits on. Don't hesitate to comment if you have any questions. Good luck!
EDIT:
I have now added a second design, v10. this design has most of the same benefits as the first one, however it is not as universally compatible as the first ver. and the heatsink fan may interfere with the hotend holder. The benefit of v10 though is that it integrates both the e3d v6 "spring clamp" style heatsink mount as well as a 40mm cooling fan adapter as i have now moved on to using 40mm noctua fans cause they're quiet as hell. should print without supports still.