This support is designed for the E3DV6 extruder and is a direct replacement for the original blower support. It allows you to attach a turbine and if you are using my extruder, you can also attach a bltouch in a very compact system.
You may want to take a look to my extruder https://www.thingiverse.com/thing:2433116
If you find it useful, please share with me a photo. Thanks.
04/08/2018 Added new blower support just similar to prusa´s.
The blower duct is disigned to print without supports. I recommend placing supports manually to avoid the supports inside the fan duct.