This may seem like a silly question, but why do designers of fan ducts for the UM2 connect the left- and right-side ducts across the middle in front of and below the hot-end?
Wouldn't it be easier to have two pieces - a left- and a right-side duct? Seems like this would alleviate issues as to heat from the hot-end.
If airflow needs to be directed away from the hot-end, connect the two pieces across the bottom with a thin piece of metal, like the piece of beer-can Venkel used as a heat-shield on his version.
Yes I have done this while testing but Is not the point of my design. This Is just to test main design function so I can then make a full metal Shroud. Its faster and easier to design and test the whole thing in plastic. Also Venkels Little metal bit only protects against the sides, you need to protect the sides and bottom. While this is easy for some, not all people have the ability to cut and shape bits of metal. For me I just cut a finger off a kevlar glove I had lying around and shoved that in there and it works perfectly.
This is one reason why I did just load it straight away on youmagine as I haven't worked on a way for everyone to easily protect it against the heat. But quite a few people wanted to test it so I just uploaded it.
You may want to try mnis design or follow what pm_dude is working on as he is doing what you mention.
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