This is the a|s Tornado, a really tiny piece that can do A LOOT!
The idea behind this fanduct is to be installed without complications, making use of the screws on the stock blower to ensure you'll have everything you need for the upgrade.
The stock fanduct redirect the air just to 1 side, so when the hot end moves to the right, there's almost no air to cold down the filament. The a|s tornado will redirect the air all around the nozzle, so no meter where the nozzle goes, the air will be there.
This fanduct was made thanks to the "Creality Ender-3, CR-20, Geeetech A10 3D Printers User Group" on facebook... thanks for all the feedback!!!
Link to the group:
Mounting the fanduct
Before you start is good to move up your x rail, that way you'll have more space to work.
First remove the blower, check the screws, there are two of them a little bit longer, those two will be the bottom ones, those will hold the tornado fanduct.
Put the fanduct into the blower, then align the fanduct support with the hot end housing at the bottom.
Now attach the blower and fanduct using the 4 stock screws, remember to use the longer screws at the bottom.
and that's all!
I did a mistake... not a deal breaker mistake... but a mistake anyways. I notice this right out of the box that my printer had the hot end enclose a little bit in a angle.. not that big maybe... but was out of the box like that! so I thought maybe was normal... when I took the measurements I took the distance from the right side of the enclose to the middle of the nozzle... and that was the mistake! with the angle, the side was closer to the nozzle, and the design came from those measurements... so in the final product the nozzle is not at the exact middle.
So!!.... the next move is to fix that mistake... and other even bigger... I made the fanduct larger to compensate the 4/ 3.5mm high to fit down there... the larger area helps to move the wind flow... but! I didn't notice that the fanduct can hit the bed cable bracket in the far left corner... If you use a glass, and that glass is thick, you may not experience this problem... but is something I can change in the design, and I'll do.
Finally... I want to make nice looking parts, that fit into your printer without using extra screws, or taking a loot of parts out of your printer... BUT!!!! we all may need to take out that big fat box that make almost impossible the access to our nozzles to do the cleaning and maintenance... so... I'll do another fanduct... as always the same rules... no extra screws, not difficult to mount, small (because lees is more) and must be cool to see! I already have the idea of what to do... so all I need right now is find the time... but stay close!